It will be interesting to see comparisons between the X4 845 and Kaveri/Godavari at the same clock speed. Most estimates I've seen so far indicate about a 10%-15% edge in IPC for the newer architecture. This will help us figure out where Zen should land, considering Zen is supposed to have 40% better IPC than Excavator.
I agree that it will be interesting. It will also let us compare Carrizo (x4 845) and Bristol Ridge with DDR3 vs DDR4 on what is essentially the same memory controller. Though the per-clock improvements of Carrizo over Kaveri can be as low as 5%, which is evident from The Stilt's testing of Cinebench R10 on his Carrizo reference platform.
Yeah, half the cache and half the pcie lanes. Killed any appeal it might have had for me
I'm not sure what to make of the PCIe lane situation. But yeah, it's quite a limitation considering the fact that you have to use a dGPU with the x4 845. If you want any other PCIe devices in the system . . .
Also, it may offer us a preview of what we can expect from Bristol Ridge on AM4 wrt PCIe lanes. The Summit Ridge/AM4 slide we've all seen shows that the 16x lane PCIe configuration is particular only to Summit Ridge. Bristol Ridge may have an identical configuration to Carrizo.
Learn something every day. Thanks.
No problem. Though Stilt offered more complete information of the cache differences, so . . . yeah. I can only claim so much credit.
it doesn't make sense for them to name it 845 and continue to sell the 860K and others for more if that's the case.
When overclocked, many 860k processors are going to be faster than the x4 845. The fastest the 845 will ever go is 4 GHz (barring bclk OC, which sucks on FM2+ for the most part). I would expect a 4.5 GHz 860k to outperform the 845 in most situations (with a few rare exceptions).
Maybe they found a way to fix the heavy CPU throttling during higher iGPU usage and other optimizations.
I certainly would like that. It would also be nice if they provided a way to just run all zones (NB, CPU, iGPU) at full tilt per user configuration assuming everything can stay within an acceptable thermal envelope. Kaveri offered no real way to do that from the UEFI which was irritating. Sure, it SAID you'd get static clocks, but in reality . . .