high cpu vtt is needed for high clk and high mem frequencies and high uncore frequencies - same principle applies to all x58 boards
you're weclome
not enough space unless one of the 4 gpus is single slot hehe - that and availability of 5870 is rare and expensive - i.e. hd5870 here is now US$735Luckily I got my 3 for US$460 each - purchased 2nd hand as previous owner updated to 2x HD5970 hehe
Anyway, starting with 2x HD5870 tests first though. Starting to push the clocks on 2x HD5870 in Vantage for Win 7 Ultimate 64bit.
100% fan speed voltages and clocks set in MSI Afterburner v1.41:
- 975/1263 at 1.187v
- 985/1263 at 1.212v
@985/1263 noticed that part way into Vantage bench, GPU2's fan speed drops out of 100% speed to 50% fan speed = end result GPU2 is 9C hotter at 63C peak versus GPU1 at 54C peak temps. GPU score seems a bit low ????
3Dmark Vantage = 27,045
http://service.futuremark.com/compare?3dmv=1665802
System:
- Intel Xeon W3570 3847A696
- EK Supreme LT 1366 / FESER 480 / MCP655
- Asus P6T6 WS Revolution
- Gskill Trident F3-16000CL9T-6GBTD
- 2x Sapphire HD5870 CF flashed Asus bios 9.11 drivers
- 750GB Samsung SATA
- Pioneer DVR-217 DVD-RW
- Corsair HX1000 PSU
- Dual Boot - WinXP Pro SP3 (nLite fully updated) with Vista Theme & Win7 Ultimate 64bit RTM
Took some photos of 2x HD5870 CF setup on Asus P6T6 WS Revolution (supports 3x PCI-E x16 slots for PCI-E #1, #3 and #5 slots). I grabbed my DFI UT X58-T3EH8's longer flexible Crossfire connector bridges as DFI UT X58-T3EH8 has double slot spacing for CF. Wasn't sure if I need both bridges for 2x HD5870 CF as there wasn't any difference in scores really for 1x vs 2x bridges I don't think. Last photo compares the longer crossfire connector bridge with the standard one.
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