The memory kit they used is validated for 4000Mhz 19-25-25-45 @ 1.4V, so the only test that made any kind of sense from the ones above was 4266 20-25-25-45.
And weird write bandwidth, even on the cachesI don't know what to make out of the L1, L2 and L3 cache bandwith on the Zen 2 in this leak. Looks out of this world.
Assuming these leaks are legit, I'm guessing that AMD focused on giving the on-chip caches insanely high bandwidth in order to offset the losses from separating the memory controller and CPU die. And assuming the other leaks are legit, it looks like they succeeded spectacularly.
For comparison, here is an i7-8700K @ 5GHz, no AVX offset, 4700 cache clock with DDR4-3600 CL15 B-die memory:
Comparing it to the 2700x, my only working theory is PB was on basically turning it into a 3800x.Oh, it actually isn't. That was just from a misleading comment from someone who read the review before it was taken down...
3700X is also pulling quite a bit of power in this review?
that is not too practical to say that, because what does then, a 3800X turn into?Comparing it to the 2700x, my only working their is PB was on basically turning it into a 3800x.
There is probably a power cap to some degree. But I think that the 3700x is meant more for users looking for low power usage and therefore unlikely to turn PB on. Outside better binning I am guessing the 3700x and 3800x unleashed are relatively close to each other.that is not too practical to say that, because what does then, a 3800X turn into?
Another hint is that the 3700x got the same CB R15 ST score as the 3900x. And don't forget that the Intel parts are running 2667 memory. Sure, both sides are running their max officially supported memory, but it's something to keep in mind.Comparing it to the 2700x, my only working their is PB was on basically turning it into a 3800x.
It will be interesting to see reviews using x570 motherboards as well as X470 motherboards. Memory speeds of 3200mhz, 3600mhz, 3800mhz and 4000mhz so we can see how the memory scales. I read on tomshardware the sweet spot is 3600mhz with the low latency memory or 3733-3800mhz for performance value. Going higher is not worth the price. Since these are high end parts, value goes out the window. So we will probably see review with beyond 4000mhz memory.
3700x is 20-30% faster than 2700x.Performance around 7700k with slow 2400mhz ram, but still slower than 9900k.Power consuption is also worse with 3700x than with 2700x.Looks like AMD playing same game with TDP as intel.First actual bench leaks of 3700X and 3900X:
There is probably a power cap to some degree. But I think that the 3700x is meant more for users looking for low power usage and therefore unlikely to turn PB on. Outside better binning I am guessing the 3700x and 3800x unleashed are relatively close to each other.
Would any of you incredibly technically inclined folks like to take a guess at how they got the L3 bandwidth so high? Those are L2 cache numbers.
AMD has stated publicly, that you have to set the Infinity Fabric multiplier to 1/2 if you want to run memory faster than 3733 MHz. That pushes latency back down to about ~2666 MHz levels. This means you have to clock the memory insanely high (e.g. 4400 Mhz +) just to get the same latency back you had at say 3200 MHz.
that is not too practical to say that, because what does then, a 3800X turn into?
There is probably a power cap to some degree. But I think that the 3700x is meant more for users looking for low power usage and therefore unlikely to turn PB on. Outside better binning I am guessing the 3700x and 3800x unleashed are relatively close to each other.
That is, at least from purely settings perspective, it's possible to run faster than 3733MHz ram at 1:1. However, this is running it at a faster speed than what AMD intended, and is therefore overclocking. How high the IF clock can actually go is still unknown, but there is likely at least some margin on there, AMD isn't likely to ship every chip at the very highest speed they can possibly wring out of them. So finding out the actual limits is something I expect to happen quite quickly after release.