Poll: Ryzen 7950X3D, 7900X3D, 7800X3D

[g67575]

Be cautious with AMD's slides guys

Notice how it only shows comparison to the 5800x3d and no performance comparison to ryzen 7000?

There is a good reason for that: take cs:go as an example, amd says 7800x3d is 23% faster than 5800x3d in this game. Ok, so where does that place it versus the 7700x??





Oh, so the 7800x3d is 16% slower than the 7700x in cs:go. Sounds great, so that's why AMD didn't compare x3d versus ryzen non x3d 7000... That must mean the clock speeds are significantly lower on x3d models (7700x3d must be several hundred MHz slower boost clock than the 7700x) , which makes sense given the x3d models have lower TDP versus the non x3d models

You could say I'm remorseless. At least in terms of buyers remorse.

The 7700X stacks up pretty well vs my last CPU (10700KF). It certainly seems to like that top teir GPU.

 

[Grim5]

Looks like the 8 core vcache CPU struggles with 5Ghz all core, which means vcache is going to be expensive if you want a 5Ghz or above CPU (e.g 7900X3D).

Unless someone finds a way to OC the 7800X3D beyond it's spec. It seems like there is a big difference in silicon quality between the 8 and 12 core variants here, for some reason.

It's bit jarring that Lisa Su doesn't even mention the difference in clock speeds, considering this was a major selling point of Zen 4 CPUs.

No it's not a difference in quality, the 7700x3d is limited to 5ghz max single core boost (all core clocks will be well under 5ghz) because it's voltage limited - just like the 5800x3d amd has to limit the voltage to the chiplet due to how sensitive the 3D cache is to voltages and there is only so much clock you can get with limited voltage. The 7900x3d and 7950x3d don't l have this issue because AMD only put the 3D cache onto one of the chiplets, and that allows the second chiplet to run at normal voltage and clocks.

 

[g67575]

How much for a 7900X3D then? Maybe £650-£700?

The 7950X3D is looking like a needless product for gamers considering the cache amount is basically the same as the cheaper model... I guess you'd buy if money is no object.

 

[Dave2150]

7950X3D for me need the extra grunt in games, love that 120W TDP too. Will be interesting to see how it fares against the 13900KS 400W TDP.

It'll blow the 13900KS away and make it look a total joke. That 120W TDP is amazing too, coupled with my 4090 @ 70% PL (350W), will mean I have quite an efficient system, considering the performance!

7950X3D for me too, where's that pre-order button, @Gibbo ?

Asus ROG Crosshair X670E Hero on offer at £629 as well, think I'll pick up the motherboard now as they're likely to go out of stock closer to release

 

[delta0]

Feb launch is great. I’ll probably go for the 7950X3D

 

[g67575]

I hope you chaps have got a good GPU to match the vcache CPU with...

 

[Bencher]

It'll blow the 13900KS away and make it look a total joke.

Doubt.

Tested my 12900k clocked at 5.4 ghz compared to a stock 13900k with 7600c34 ram. The 13900k was around 15% faster in gaming than a maxed out 12900k. A maxed out 12900k is at least as fast, most likely faster than every zen 4 right now. So the zen 4 3d needs a 20% increase over the normal zen 4 to tie the normal 13900k at stock.

 

[LtMatt]

I hope you chaps have got a good GPU to match the vcache CPU with...

Yep, the two fastest GPUs money can buy, AIB 4090 and AIB 7900 XTX.

 

[Dave2150]

Doubt.

Tested my 12900k clocked at 5.4 ghz compared to a stock 13900k with 7600c34 ram. The 13900k was around 15% faster in gaming than a maxed out 12900k. A maxed out 12900k is at least as fast, most likely faster than every zen 4 right now. So the zen 4 3d needs a 20% increase over the normal zen 4 to tie the normal 13900k at stock.

I have a 13900K @ 6Ghz currently, this'l be used in my VR/family rig, so I can use either. Though don't think the 13900k will touch the tuned/clocked 7950X3D in 99% of games. TDP difference will also be pretty crazy.

 

[Dave2150]

I hope you chaps have got a good GPU to match the vcache CPU with...

4090 ROG Strix

 

[Bencher]

I have a 13900K @ 6Ghz currently, this'l be used in my VR/family rig, so I can use either. Though don't think the 13900k will touch the tuned/clocked 7950X3D in 99% of games. TDP difference will also be pretty crazy.

Well - it depends on how much faster you expect the 3d to be from the normal zen 4. It has to be 30% faster on average to win meaningfully against a stock 13900k. If you are running 6ghz with 7600-800 ram, i doubt the 3d is going to be faster at all. Youll be doing a sidegrade

 

[Dave2150]

Well - it depends on how much faster you expect the 3d to be from the normal zen 4. It has to be 30% faster on average to win meaningfully against a stock 13900k. If you are running 6ghz with 7600-800 ram, i doubt the 3d is going to be faster at all. Youll be doing a sidegrade

We'll see. Either way, I want to play with an AMD CPU, it's been far too long. My last AMD CPU was an Athlon FX-60, many years ago

Maintaining two PC's means I have the perfect chance to be on both platforms can can test/use both. Having two Intel platforms was boring (had 11900k and a 12900k system previously). 13900k & 7950X3D will be much more exciting - though I fully expect to use the AMD system as my daily driver and for 99% of games I play. That 120W TDP makes absolute sense in this day and age.

I'm a bit concerned about using my Valve Index on an AMD platform (after reading about some compatibility issues), so having the Intel 13900k for my VR rig means I have guaranteed stability for this. I'll test VR on the AMD system though just to see, as there's much nonsense reported these days online, testing yourself is always best.

 

[Dave2150]

Yep, the two fastest GPUs money can buy, AIB 4090 and AIB 7900 XTX.

@LtMatt What RAM kit do you recommend for Zen4? Assuming you've tried quite a few

 

[Bencher]

We'll see. Either way, I want to play with an AMD CPU, it's been far too long. My last AMD CPU was an Athlon FX-60, many years ago

Maintaining two PC's means I have the perfect chance to be on both platforms can can test/use both. Having two Intel platforms was boring (had 11900k and a 12900k system previously). 13900k & 7950X3D will be much more exciting - though I fully expect to use the AMD system as my daily driver and for 99% of games I play. That 120W TDP makes absolute sense in this day and age.

I'm a bit concerned about using my Valve Index on an AMD platform (after reading about some compatibility issues), so having the Intel 13900k for my VR rig means I have guaranteed stability for this. I'll test VR on the AMD system though just to see, as there's much nonsense reported these days online, testing yourself is always best.

I too have 2 computers, one intel one amd, though the amd is stuck with a 3700x. Was disappointed with the zen 3 prices so never upgraded it. I'm looking at the 7800x 3d, though ill probably wait for a single 12 core CCD 3d, that one will probably be endgame for game performance, hopefully until 2025 we will see something like that.

 

[LtMatt]

@LtMatt What RAM kit do you recommend for Zen4? Assuming you've tried quite a few

I've only ever used one kit, 6000C30 @ TCL 28.

 

[Aretak]

Well, the 7800X3D will be my next CPU assuming that AMD don't price it too ridiculously. DDR5 has come down enough that a middling 32GB kit is now reasonable, and if the 5800X3D is anything to go by then the X3D chips should be less sensitive to RAM settings than most CPUs. Just need to find an AM5 board at an acceptable price now. That's the hard part...

 

[Bencher]

I've only ever used one kit, 6000C30 @ TCL 28.

Thats an mdie right? My samung 6000c36 work at 6000 30 34 34 34 58, though havent tested them on amd.

 

[LtMatt]

Well, the 7800X3D will be my next CPU assuming that AMD don't price it too ridiculously. DDR5 has come down enough that a middling 32GB kit is now reasonable, and if the 5800X3D is anything to go by then the X3D chips should be less sensitive to RAM settings than most CPUs. Just need to find an AM5 board at an acceptable price now. That's the hard part...

Hoping that top tier performance can be achieved with the slowest DDR5 kits as that really shows off the quality of the X3D chips IMO.

Thats an mdie right? My samung 6000c36 work at 6000 30 34 34 34 58, though havent tested them on amd.

Yes.

 

[Dave2150]

Motherboard ordered, these'll probably be out of stock or back to original MSRP once the reviews hit



Hmm, may pick up a 7600X just to make sure my board isn't DOA, not had a DOA motherboard since the DFI Lanparty Nforce2 days, but you never know

 

[Dave2150]

I've only ever used one kit, 6000C30 @ TCL 28.

Hmm, looking at the part number, google see's this as a Gskill F5-6000J3038F16G Intel XMP kit? Does the ASUS board allow you to load XMP3.0 as EXPO, or are you just setting the speeds manually?