AMD 3300x vs Intel i9-10900k... evidence that gamers can save a lot of cash on CPU's

[Kirby Wurm]

The 3600 has two, three cores from each CCX, the CCD's are split into two four core CCX's.

So:
3100/3600/3700/3800. Two CCX one CCD
3900/3950. Four CCX two CCD
3960/3970. Eight CCX four CCD
3990. Sixteen CCX eight CCD

3300X. one CCX one CCD.

What that looks like...

Thanks for the explanation, I hadn't read about CCD's. And I just noticed I didn't finish my first paragraph hehehe, can't recall what I intended to type.

I suppose AMD are working to reduce the latencies between CCX and CCD to further improve performance. Why is it that games are more sensitive to this than productivity applications (judging from relative performance when compared to Intel in benchmarks)? Sorry for this off topic tangent but I don't want to trawl through some of the massive Ryzen threads for the info.

 

[humbug]

Thanks for the explanation, I hadn't read about CCD's. And I just noticed I didn't finish my first paragraph hehehe, can't recall what I intended to type.

I suppose AMD are working to reduce the latencies between CCX and CCD to further improve performance. Why is it that games are more sensitive to this than productivity applications (judging from relative performance when compared to Intel in benchmarks)? Sorry for this off topic tangent but I don't want to trawl through some of the massive Ryzen threads for the info.

Zen 3 will have single 8 core 16 thread CCX CCD's, so its like 9900K chiplets, no more splitting the chip dies into CCX's, that on its own will make these chiplet dies behave like an 8 core 3300X
AMD also said they will have 15% higher IPC, so far with Zen AMD have always did what they said or under promised, but you know.... we'll see.

The best example of productivity i can give you is this....

Single threaded:
11, Score 547: AMD Ryzen R9 3950X at 4.7Ghz, jordand77
12, Score 547: Intel Core i7 8700K at 5.2Ghz, Radox-0

4.7Ghz vs 5.2Ghz is about 10%.

Multithreaded:
Score 4125: AMD Ryzen R5 3600 at 4.5Ghz, RavenXXX2
Score 4124: Intel Core i7 8700K at 5.2Ghz, Chaos666

4.5Ghz vs 5.2Ghz is about 15%

So 10% higher per core IPC, the 15% is probably because AMD have slightly better SMT.

If you look back at this slide, 3300X vs the 7700K is 1% faster here, but the 7700K is 15% higher clocked, so 14% higher IPC, now look at the difference between the single CCX 3300X and the dual CCX 3100. both at 4.4Ghz the 3100 209 FPS, the 3300X 242 FPS, a difference of 16%.

All margin of error with in 1 or 2% similar to the IPC difference in MT Cinebench R20

So again, just having a single CCX vs dual increases the gaming performance 'in this game at least' by 16%, HUB tested one at 7%, so it depends on the game. i guess where the game is really sensitive to intercore latency the more it hits performance.

 

[Richdog]

Thanks humbug for the informative (if perhaps a tad heavy and complex in style of prose ) posts, much appreciated. It's great how even with the small architectural penalty that comes from having separate CCD's that Zen2 is so strong and such great value. Zen3 should really be a nice refinement of the architecture and for me it seems that the 4700x 8c16t will likely represent the ideal purchase when combined with modest-not-fancy components including a B550 and 32GB RAM. I will put the money saved into a 2TB PCIe4 SSD drive and of course a nice GPU such as an Nvidia 3080. I will stick to gaming at 1440p as I think it still represents the perfect sweet-spot for this generation of games, so a Ti may not likely be needed.

 

[humbug]

You're welcome

 

[Richdog]

You're welcome

Just out of interest old chap, what are your own personal upgrade plans (if any)?

 

[humbug]

Just out of interest old chap, what are your own personal upgrade plans (if any)?

Waiting to see what Nvidia / AMD bring to the GPU table with the next round + new motherboard to get ready for Zen 3 sometime later, for the CPU i'm going to wait until Zen 3 has been on the market for a while or cheap from being end of line, the 3600 has plenty left in the tank, a new GPU will be my priority.

 

[Kirby Wurm]

Thanks humbug for the informative (if perhaps a tad heavy and complex in style of prose ) posts, much appreciated.

Yes, likewise!