Soldato
Single thread IPC gains can be seen here.
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AMD Zen 2 (Ryzen 3000) - *** NO COMPETITOR HINTING ***
- Thread starter Jamin280672
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OcUK Staff
Taichi is decent I tried it pretty hard. Eff is good upto what you need and CPU OC is also fine....
CPUZ single thread bench is utter rubbish!! Applies to nothing!!!
CPUZ single thread bench is utter rubbish!! Applies to nothing!!!
Soldato
Tell us about power draw on a max overclock 16 core part. Does it cause issues? on Taichi?
In the past the T-topography has not been so good for 2 sticks but better for 4 but I would think this was due to weaker IMC in the Ryzen 1 + 2 chips. If the sweet spot is around 3733mhz but using a divider on the infinity fabric allows you to go higher to 4500mhz+ this may be the better way to go. We will have to wait and see the reviews.
AMD showed that latency increases again when going 2:1 so will certainly need reviews
3733Mhz = 1:1 = 3733 on IF
4500Mhz = 1:2 = 2750 on IF + increased latency.
Depends on workload most likely also; as games tend to like lower latency; but maybe we're all in for a surprise in reviews if they do some proper memory testing.
At the moment I'm eyeing up Team Group 8Pack 3866Mhz 16GB; as should be able to run at 3733Mhz with decent timings; but I'm not buying anything until I see reviews.
I have to agree, I want an X570 and I do need sound but not Wifi, no RGB at all and no 10GB lan. Just the basic board with good bios and excellent power delivery plus SLI/crossfire capable.
Soldato
It sounds like with a quality mobo over 4000Mhz on the RAM should be regularly achievable.
IF these are right...
My i7-6700K at 4500MHz scores 535. Ryzen 5 3600x at 4500 MHz scores 609. Thats almost 14%IPC increase over SKylake.
Don't know why I'm surprised, I knew Zen+ had roughly equal IPC to Skylake already. But CpuZ single thread benchmark wasn't AMD friendly previously
Edit: 21% clock adjusted IPC over 2700x. That benchmark must really like large cache or new branch predictor
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From a Chinese forum, and using CPU-Z ST benchmark as a measure. Take with a large pinch of salt.
That's:
IF clocked at 1866.5 MHz with DDR4-3733
IF clocked at 1125 MHz with DDR4-4500.
They said DDR4-3600 is the optimal solution which I guess means peak performance out there.
OcUK Staff
I tested all this stuff already..... The mems you have will be fine......
3733 is 1866 IF actually......... 3600 1800 and blah blah blah......
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According to AMD 3733 is best place to be due to how IF works. We need banchmarks if 4000 will cut it but i think would need like 4400 to make up performance lost due to divider. Also Zen architecture is about timing not as much mhz 3200cl14 is faster than 3600cl16 TESTED.
They stated 3600 is the sweet spot for price to performance. Not that's it's optimal, best would be 3733 before it switches to 1:2 for IF.
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Have You had time to play with timings ?? That's most fun part of owning Zen for me. Since Last 2 gens ware well not lets say high clockers even on my binned chip spent more time doing that while doing squats watching em numbers fly
But Now im puzzled about IF not 1:1 ratio as amd stated. Anything pass 3633ish with high cpu clock was not stable due to IF hmmm
Yes, 1600C14 vs 1800C16, you get 12.5% frequency difference vs 14.3% latency difference. The latency difference is larger.
Any idea on how 32GB 2x16GB would run? Or would 4x8GB be fine?
You only seem to have 4x8GB 32GB 8Pack kit on the store.
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It's not wise to extrapolate like that.
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I dont think 4x1 was ever better than 2x2 on memory on any platform without quad aka HEDT platform.
OcUK Staff
I am not allowed to discuss performance......... with different mem configurations....
The slide posted above tells you a lot.
The slide posted above tells you a lot.
Aye, that's what I've also seen on previous Ryzen platforms, but had plenty of folks in this very forum try and climb down my gullet when I mention that before.
So who knows what Ryzen 3000 might prefer.
I currently have 32GB, and would prefer to stay wit 32GB, instead of dropping to 16GB; but it depends on how well 4 sticks, vs 2 ( dual rank ), run at decent speeds.