AMD Ryzen 5 8400F: Specs, Price and What the F Really Costs You
In one paragraph: the Ryzen 5 8400F is six Zen 4 cores and twelve threads at 4.2GHz base and 4.7GHz boost, with 22MB of cache, a 65W power budget, and no graphics built into the chip. The F is what the missing graphics is called, it is the reason the processor is cheap, and in a machine with a real graphics card in it the loss is nothing you will ever meet. This is the processor fitted as standard to eight Ginger6 machines and to all three custom builders, from £1069.99 for a finished PC. It is not the fastest chip on our list and it is not meant to be. Every one is built by hand in Wolverhampton, run under load for a full day, and delivered free to UK mainland addresses.
Most people reading this are looking at a specific machine and want to know whether the chip inside it is any good. It is. If you would rather hear that from the person who assembles them, ring 01902 714533 and read Kevin the specification you are looking at.
Four Figures, and One Missing Part
Every number here is AMD's own published specification, checked against the label our processor dropdown carries, which reads AMD Ryzen 5 8400f (6x 4.20/4.70GHz) and agrees with it to the decimal.
The F: no graphics on the chip at all
AMD's specification sheet for this part reads, under Graphics Model, "Discrete Graphics Card Required". There is no small Radeon core on the die, and the letter F is how AMD labels that. It is the single reason the chip is cheaper than its siblings, and in a Ginger6 machine it costs you nothing, because every build we fit it to has a real graphics card in the slot doing all of the drawing. What you give up is the ability to get a picture on screen with the card pulled out, which matters on the day a graphics card fails and on no other day. If that day worries you, say so on the phone and we will point you at a chip that keeps a display output.
Six full Zen 4 cores, twelve threads
All six are proper Zen 4 cores on one piece of silicon, not a mix of full and compact cores, and AMD lists the die at 178mm² with a single package die. Being on one die rather than two has a quiet advantage: there is no hop between core clusters for one core to talk to another, so the latency inside the processor is even. Twelve threads is what keeps a machine civil when a game, a browser, a voice client and a recording tool are all running. Six cores was a hard limit in 2018. It is a comfortable middle in 2026, and the section below is honest about where it stops being one.
22MB of cache, and that is the real compromise
16MB of L3 plus 6MB of L2. Cache is fast memory sitting on the processor itself, and this is where the 8400F gives ground rather than on cores or clock speed: a Ryzen 5 from the 7000 or 9000 desktop families carries 32MB of L3, twice as much. That gap shows up in the games that ask the processor for the same small pieces of world state thousands of times a second, and it does not show up anywhere else. Nobody mentions it in the marketing, so we are mentioning it here. It is the honest cost of the price, and further down this page it decides two of the three recommendations we make against this chip.
65W, AM5, DDR5, PCIe 4.0
TDP is the heat the cooler has to move, and 65W is little enough that the standard cooler on a Fusion build holds the rated clocks without the fans announcing themselves. AMD publishes a maximum operating temperature of 95C and a configurable power range of 45W to 65W. The socket is AM5 with DDR5 memory in two channels, so a future processor swap is a chip and a firmware update rather than a new motherboard. The graphics slot runs at PCIe 4.0 x8 rather than PCIe 5.0 x16. AMD publishes twenty native lanes with sixteen usable across the whole chip, and Gigabyte's datasheet for the A620M H board we fit states PCIe 4.0 x8 mode for Phoenix processors, with the rest of the lanes going to the NVMe drive. On a card that only uses eight lanes itself, such as the RTX 5060 or the RTX 5060 Ti, the effect is negligible. On a card that wants all sixteen it is a real consideration rather than nothing, and worth raising with us before you order.
Eight Machines, One Processor, and Only the Card Changes
This is the fact that makes the 8400F worth a page of its own. It is not an upgrade you pick out of a list. It is the chip already inside most of the machines we sell between £1069.99 and £1289.99, which is the band most Ginger6 customers buy in. Across those eight builds the processor, the board, the memory and the drive are the same. The graphics card is the whole difference, and so is the price.
| Machine | Graphics card | Price with the 8400F fitted | What it is for |
|---|---|---|---|
| G6 Fusion 600 X1 | RTX 3050 | £1069.99 | The entry point. A finished 1080p machine when the total is the constraint. |
| G6 Fusion 600 X2 | RTX 5050 | £1154.99 | A current-generation card at the bottom of the range. |
| G6 Fusion 600 X4 | RTX 5060 | £1179.99 | Where we would start if the budget stretches. Comfortable 1080p, entry 1440p. |
| G6 GTA V 144hz | RTX 5060 | £1194.99 | Specified around one game at 144 frames a second. |
| G6 ND 1000 | RTX 5060 Ti | £1199.99 | Built and boxed already, for next-day dispatch. No processor dropdown on this one. |
| G6 Fusion 600 X3 | RX 7600 | £1214.99 | The Radeon option lower down the range. |
| G6 Fusion 600 X6 | RX 9060 XT | £1264.99 | Current-generation Radeon, more memory on the card. |
| G6 Fusion 600 X5 | RTX 5060 Ti | £1289.99 | The most card the Fusion 600 chassis is specified with. |
Read the right-hand column, not the left. £220.00 separates the top of that table from the bottom, and every penny of it is graphics card. Nothing else moves: the same six-core 8400F, the same Gigabyte A620M H board, the same 16GB DDR5 5200MHz (2x8GB) Dual Channel, the same 1TB M.2 NVMe drive, the same Windows 11 Home, Wi-Fi via the included USB adapter on all of them. If you are weighing two of these machines against each other, you are choosing a graphics card and nothing else, which is a far easier decision than it looked.
That is also why the processor is the same on all eight. We fit the 8400F as the default because at these price points the card is what you will feel and the chip is not what you are waiting for. Money moved from the graphics card into the processor at this end of the range buys a number you cannot see. Money moved the other way changes every frame. The three custom builders start from the same chip for the same reason: the AMD custom PC builder and the Ryzen 7000 builder open at £1039.99 with an 8400F in them, and the Workstation builder at £1054.99.
One caveat on the G6 ND 1000. It is a pre-built machine held ready for next-day dispatch, so it has no processor dropdown at all. If you want a different chip you want one of the Fusion builds instead, which are made to order.
Where Six Zen 4 Cores Run Out of Road
A processor is never fast or slow by itself. The only question worth asking is whether it is the part you are waiting for, and for the machines this chip goes into the answer is usually no. At 1080p on an RTX 3050, an RTX 5050, an RX 7600 or an RTX 5060, the card is still drawing long after the six cores have finished their share of the frame. Put a £300 processor in that machine and the frame rate barely moves, because the thing setting it was never the processor.
There are four places where that stops being true, and they are worth naming precisely rather than hedging.
One: playing and broadcasting at the same time, with the encoding done on the processor. If a graphics card handles the broadcast, which is how nearly everyone streams now, six cores cope. If you have set the encoder to run on the processor at a high bitrate, six cores is thin and you will see it in the game rather than in the stream.
Two: work that scales with core count. Video exports, 3D renders, long compiles, batches of raw photographs, several virtual machines. These jobs use every core you give them and finish sooner with more. No clock speed makes up for the missing pair.
Three: the games that live on cache rather than on cores. Competitive shooters chased to very high frame rates, flight and racing simulators, and strategy campaigns three hours in are all built on thousands of tiny repeated lookups, and 16MB of L3 runs short where 96MB would not. That is a cache problem, not a core-count problem, and the fix is a different chip rather than a bigger one.
Four: a graphics card well above this class. Fit an RTX 5070 Ti or better and the card finishes its work fast enough that the processor becomes the thing holding the frame up. We do not build the 8400F into machines like that, and if you are configuring one yourself, do not either.
If none of those four describe your week, the honest position is that six Zen 4 cores are enough and the argument is over. Most people who land on this page from a Fusion 600 listing are in exactly that position, and they should stop worrying about the processor and go and choose a graphics card.
Four Machines We Would Put Your Name On
All four carry the 8400F as standard with nothing to add to the price, and all four were in stock with a live add-to-cart button on the day this was written. They are ordered by what they are for rather than by price.
There is a cheaper way to own this chip, and it is fine
Unusually for one of these pages, the cheapest route to the 8400F is not a machine we would argue you out of. The AMD custom PC builder and the Ryzen 7000 builder both open at £1039.99 with this processor already in them, and the Workstation builder at £1054.99, so you can start £30.00 below the Fusion 600 X1 and choose the case, the drive, the memory and the cooler yourself.
The catch is only that you have to know what you want. A builder will let you assemble a machine with the money in the wrong place, and the Fusion builds exist because we have already had that argument with ourselves on your behalf. If you are new to this, take a Fusion. If you have done it before, the builder will save you money and give you a better machine.
The 8400F can also be fitted to a G6 Fusion 800 build, where it is a £60.00 reduction rather than an upgrade and takes the Fusion 800 X2 down to £1219.99. Whether that is a good idea is the subject of the next section, and the short version is that it depends entirely on what the machine does. Browse the finished builds on the Ryzen 5 gaming PC page. Every figure on this page was read from the live configurators on 30 August 2026, and the current one is always in the dropdown on the product page.
Three People Who Should Spend the Extra
The 8400F is the default on eight machines, so most of the orders that come through carry it. Here are the three cases where we move people off it, with what each one costs on a G6 Fusion 600 build.
You Multitask Hard, or You Stream
Two more cores and four more threads is a real step and this is the cheapest place in the range to take it. The Ryzen 7 8700F is the same Zen 4 generation, the same 65W and the same socket, with eight cores instead of six and a 5.0GHz boost instead of 4.7GHz. On a G6 Fusion 600 X1 it takes the machine to £1133.59.
Take it if: you record or broadcast while you play, you keep heavy applications open behind the game, or the PC has a second job in the evenings. This one is worth the money and we say so.
Frame Rate Is the Whole Point
If the machine exists to play games and nothing else, cache beats cores and it is not close. The Ryzen 5 7500X3D is also six cores, clocks lower than the 8400F, and carries 96MB of L3 against this chip's 16MB. On a Fusion 600 X1 it is £1153.99 and on a G6 Fusion 800 X2 it is £1300.65.
Take it if: you play competitive shooters at high refresh, you sit in a sim rig, or your favourite game is a strategy title that thickens by the hour. Those are precisely the games the 16MB of cache runs short in.
You Want the Machine to Age Well
The 8400F is a Zen 4 part on PCIe 4.0, one generation behind what AMD sells new. The Ryzen 5 9600X is the same six cores on Zen 5 with double the L3 cache, a 5.4GHz boost and PCIe 5.0, and on a Fusion 600 X1 it is £1115.41.
Take it if: you want the newer architecture and the faster graphics slot for the card that goes in three years from now. Leave it if: paying for it means a smaller graphics card today, because that trade is a clear loss.
A fourth case, and it is the most common of all. If the money for any of those three would come out of the graphics card, do not spend it. On a machine in this band the card sets your frame rate and the processor does not, so £84.00 moved from the chip to the card is the single best decision available on this page. That advice costs us the upsell on a real number of orders every month, and it is what Kevin says on the phone, so it may as well be written down.
Call 01902 714533 or email [email protected] with four things and you will get a straight answer: 1. The games you spend most of your time in. 2. The screen you play on, its resolution and refresh rate. 3. Whether the machine ever streams, renders or exports. 4. The number you would rather not go over.
Prefer to specify it yourself? Every option named here is on the AMD custom PC builder. If the underlying question is Intel against AMD at this level, our guide to whether an i5 beats a Ryzen 5 for gaming settles that one properly, and the best value AMD gaming PC takes the price question across the whole range. 0% finance available via PayPal Pay in 3 on orders over £500. Subject to status.
Questions We Get Asked About the 8400F
The Ryzen 5 8400F is a six-core, twelve-thread desktop processor AMD launched on 1 April 2024. It is a Zen 4 part, codename Phoenix, built on a single 178mm² die at TSMC on a 4nm process. It runs at a 4.2GHz base and up to a 4.7GHz boost, carries 16MB of L3 alongside 6MB of L2 for 22MB of cache in total, draws 65W with a configurable range of 45W to 65W, and tops out at 95C. It fits the AM5 socket with DDR5 memory in two channels and a PCIe 4.0 x8 graphics slot, with sixteen usable lanes in total across graphics and storage. It has no graphics built into the chip, which is what the F stands for, so a graphics card is required.
The F means AMD has left the graphics core off the chip, and its own specification sheet records this as Discrete Graphics Card Required. It is the reason the processor is cheaper than the versions that keep it. In a Ginger6 machine it makes no practical difference, because every build we fit it to has a real graphics card doing all of the drawing, and a graphics core on the processor would sit idle from the moment you switched the PC on. The one time it counts is diagnosing a failed graphics card, when a chip with a display output would let you get a picture on screen without borrowing a card. If that matters to you, say so and we will fit a processor that keeps one.
For 1080p, and for 1440p on a mainstream graphics card, yes. Six Zen 4 cores and twelve threads run every current game, and on the cards these machines carry, an RTX 3050 through to an RTX 5060 Ti, the card is still working long after the processor has finished its share of the frame. A more expensive chip in the same machine changes a number you cannot see. Six cores runs short in four places: encoding a stream on the processor rather than the graphics card, work that scales with core count such as video exports and 3D renders, the cache-hungry games like competitive shooters at very high frame rates and simulators, and any machine carrying a graphics card well above this class.
Eight machines carry it as standard with nothing added to the price: the G6 Fusion 600 X1 at £1069.99, X2 at £1154.99, X4 at £1179.99, X3 at £1214.99, X6 at £1264.99 and X5 at £1289.99, the G6 GTA V 144hz at £1194.99 and the G6 ND 1000 at £1199.99. It is also the starting processor on all three custom builders, which open at £1039.99 for the AMD and Ryzen 7000 builders and £1054.99 for the Workstation builder. On the G6 Fusion 800 range it appears as a £60.00 reduction rather than an upgrade, taking the Fusion 800 X2 to £1219.99. It is not offered on the Fusion 1200 range or on any Apex machine.
A finished machine starts at £1069.99, which is the G6 Fusion 600 X1 with an RTX 3050, 16GB of dual-channel DDR5 and a 1TB M.2 NVMe drive. The build we would point most people at is the G6 Fusion 600 X4 with an RTX 5060 at £1179.99. Above that the G6 GTA V 144hz is £1194.99 and the G6 ND 1000 with an RTX 5060 Ti is £1199.99, and the range tops out at £1289.99 for the Fusion 600 X5. Specifying your own from the AMD custom builder starts at £1039.99. Every price includes free UK mainland delivery, a 3-year warranty and a 24-hour stress test before the machine is boxed.
If you stream, record, or keep heavy applications running behind the game, yes. The Ryzen 7 8700F is the same Zen 4 generation on the same socket at the same 65W, with eight cores instead of six, sixteen threads instead of twelve and a 5.0GHz boost instead of 4.7GHz, and it is a £63.60 step on any G6 Fusion 600 build, which puts the Fusion 600 X1 at £1133.59. If the machine only plays games at 1080p on a mainstream card, the two chips will feel the same and the money belongs in the graphics card instead. Bear in mind that every G6 Fusion 800 build already ships with the 8700F at no extra cost, starting at £1279.99.
Yes, and that is one of the better arguments for the chip. It sits on AM5 with DDR5 memory, the socket AMD has committed to for years yet, so a later processor is a chip and a firmware update rather than a new motherboard, new memory and a rebuild. The Gigabyte A620M H board fitted to a Fusion build takes the whole current AMD range. Two honest limits. The graphics slot runs at PCIe 4.0 x8 rather than PCIe 5.0 x16, which is negligible on a card that only uses eight lanes itself, such as the RTX 5060 or the RTX 5060 Ti, a real consideration on a card that wants all sixteen, and a ceiling on the fastest new drives either way. And a very large processor deserves better cooling than the standard air cooler, so a 240mm liquid cooler at £51.00 or a 360mm at £64.99 is worth adding at build time rather than later.
The warranty runs for three years, and a longer parts option can be added at checkout. The machine is assembled by hand in the Wolverhampton workshop, the memory goes in as a matched pair with its profile enabled and proved rather than left dormant, the fan curve is set for the chip in the case, and the finished PC runs under load for a full 24 hours so anything marginal gives up here instead of in your front room. Wi-Fi arrives via the included USB adapter on a Fusion build, and a Gigabyte B650M D3HP AX board with Wi-Fi 6E and Bluetooth on it is a £54.00 option if you would rather have it on the motherboard. UK mainland delivery is free, Ginger6 has been building machines since 2001, and the Trustpilot score is 4.9 from more than 1100 reviews.
The Three Chips Nearest This One
One adds two cores, one adds cache, one adds a generation. The Ryzen 8000 series guide covers the family this chip belongs to and why two of its members are the default processor in most of our machines.
Ryzen 7 8700F
The same generation with eight cores, standard on every Fusion 800, and £63.60 to fit to a Fusion 600.
Read the GuideRyzen 5 7500X3D
Six cores with 96MB of L3 stacked on them. Slower on paper, quicker in games, £84.00 on a Fusion 600.
Read the GuideRyzen 5 9600X
The Zen 5 six-core with twice the L3 and PCIe 5.0, and an honest look at whether the newer generation earns it.
Read the GuideEight Machines Already Have This Chip In
Pick the graphics card you want and the processor comes with it, at no extra cost, in a PC assembled by hand in Wolverhampton, held under load for a full 24 hours and covered for three years. If the right answer for you is a different processor, or the same one with a bigger card, that is what you will be told on the phone.