PCIe 3.0 AM3/AM3+

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   It is a pretty heated topic on some forums, the ASUS board you mentioned claims PCIe 3.0 support yet many say it is only emulated not true PCIe 3.0. Given that no GPUs currently available in the consumer segment can fully saturate or bottleneck on PCIe 2.0 x16 bandwidth there is no way to determine if ASUS' claims are true or just a BIOS trick that fools the OS into detecting PCIe 3.0. The only reason anyone would want PCIe 3.0 is for SLI/Crossfire solutions as PCIe 2.0 x8 is about the same bandwidth as PCIe 3.0 x4 so with more than 2 GPUs you will be running into some bottleneck on a PCIe 2.0 board. Personally I don't see what all the fuss is about, you lose only a tiny amount of performance via bottleneck anyway given that multi GPU scaling yields diminishing returns for every GPU you add past 2 anyway. There is no way to know for sure if the GPUs are bottlenecking or if it is just the scaling causing a performance hit. 
When we are talking at best an extra 1 or 2 FPS on only the highest end multi GPU systems vs PCIe 2.0 I don't see why any manufacturer would wast time and energy trying to implement PCIe 3.0 on an AMD board aside perhaps from doing what ASUS did and emulate it so far as the OS is concerned. Manually setting my Z97 Extreme 3 to PCIe 2.0 makes absolutely no difference to my benchmarks neither does setting it to PCIe 1.0 with my GTX 960 though 1.0 may bottleneck a higher end card, a little.

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Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 25028	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Topic: PCIe 3.0 AM3/AM3+ Posted: 01 Nov 2015 at 1:02am
	It is a pretty heated topic on some forums, the ASUS board you mentioned claims PCIe 3.0 support yet many say it is only emulated not true PCIe 3.0. Given that no GPUs currently available in the consumer segment can fully saturate or bottleneck on PCIe 2.0 x16 bandwidth there is no way to determine if ASUS' claims are true or just a BIOS trick that fools the OS into detecting PCIe 3.0. The only reason anyone would want PCIe 3.0 is for SLI/Crossfire solutions as PCIe 2.0 x8 is about the same bandwidth as PCIe 3.0 x4 so with more than 2 GPUs you will be running into some bottleneck on a PCIe 2.0 board. Personally I don't see what all the fuss is about, you lose only a tiny amount of performance via bottleneck anyway given that multi GPU scaling yields diminishing returns for every GPU you add past 2 anyway. There is no way to know for sure if the GPUs are bottlenecking or if it is just the scaling causing a performance hit. When we are talking at best an extra 1 or 2 FPS on only the highest end multi GPU systems vs PCIe 2.0 I don't see why any manufacturer would wast time and energy trying to implement PCIe 3.0 on an AMD board aside perhaps from doing what ASUS did and emulate it so far as the OS is concerned. Manually setting my Z97 Extreme 3 to PCIe 2.0 makes absolutely no difference to my benchmarks neither does setting it to PCIe 1.0 with my GTX 960 though 1.0 may bottleneck a higher end card, a little.

ASRock Expert Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 04 Oct 2015 Location: Croatia Status: Offline Points: 220	Post Options Post Reply Quote ASRock Expert Report Post Thanks(0) Quote Reply Posted: 01 Nov 2015 at 12:10am
	The PCI-e Gen3 is based on the CPU, so, until AM4, no PCI-e Gen3 for AMD users. Sabertooth is just a fake advertisement.
	990FX Extreme 9 MOD P1.70 AMD FX 8120 4GHz 1.25V Thermalright HR-02 Patriot Viper 2x4GB 2133MHz Samsung 850 EVO 250GB MSI R7970 TFIII 3GB CORSAIR VX550W LanCool K62 Dragonlord ASUS Xonar D2X

khan.sikki Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 31 Oct 2015 Location: Ongole Status: Offline Points: 3	Post Options Post Reply Quote khan.sikki Report Post Thanks(0) Quote Reply Posted: 31 Oct 2015 at 11:37pm
	Hello Friends, Why there was no mother board designed for AM3 / AM3+ with pcie 3.0, up to my knowledge only ASUS have this achivement SABERTOOTH 990FX/GEN3 R2.0 Edited by khan.sikki - 31 Oct 2015 at 11:44pm
	Sikander

PCIe 3.0 AM3/AM3+

SABERTOOTH 990FX/GEN3 R2.0