So I have just recently bought the AMD professional series GPU..the Firepro W8100.*
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The performance in Autodesk 3ds max and Vray is meh.
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I rendered a simple scene with my old XFX Radeon 6870 2GB and then again on my brand new Firepro W8100 using the Vray 3.00.0.7 rendering engine and I got the same crap performance. *I was also monitoring gpu activity during the render which came back with a essentially zero gpu activity
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wondering if it could be caused by my MB (ASUS Crosshair v Formula-Z) which only has up to x16 PCIE 2.0 slots...not 3.0 which my new graphics card can run up to.
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amd does say this about the card: "Available PCIE x16 (dual-slot), 3.0 for optimal performance"...how much better performance is the question?
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Could the gpu drivers be optimized for PCIE 3.0 of such a thing exists?
So, here is the technical differences between pciw types over the years but what is the relationship of this info to that of my gpu?
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PCIe Raw bit rate Interconnect bandwidth Bandwidth per lane per direction Total bandwidth for x16 link
PCIe 1.x 2.5GT/s 2Gbps ~250MB/s ~8GB/s
PCIe 2.x 5.0GT/s 4Gbps ~500MB/s ~16GB/s
PCIe 3.0 8.0GT/s 8Gbps ~1GB/s ~32GB/s
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I have read that PCIE 2.0 is more than enough for modern gpu's but benchmarking doesnt usually include workstation graphic cards that support this argument.
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here is the GPU specs...
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AMD Firepro W8100 GPU:
SPECS
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8 GB GDDR5 memoryok
512-bit memory interfaceasuhh
320 GB/s memory bandwidth
PCIe® 3.0 compliant, x16 bus interface
2,560 stream processors
4.2 TFLOPS peak single-precision floating-point performance
2.1 TFLOPS peak dual-precision floating-point performance
Available PCIe x16 (dual-slot), 3.0 for optimal performance
A 750 watt or better power supply, with two PCIe AUX power connectors (six-pin)
8GB System memory or greater
Microsoft® Windows 8.1, Windows® 7, or Linux® operating system (32- or 64-bit)
Internet connection for driver installation
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what does all this mean?
MB: Crosshair V formula-Z
CPU: AMD FX8350 (8-core) @ 4.7Ghz
RAM: Corsair Dominator Platinum (8x2) 16gb
GPU: AMD Firepro W8100 (8GB workstation card)
cooling: custom water loop ,Ocool Nexxus U60 420 triple radiator,
Swiftech MCP655-B pump, Bitspower Compression fittings
HDD: OCZ OCZ "Vector" 256gb
PSU: NZX Hale90 v.2 1200W