Card is an AMD Reference GIGABYTE GV-R929XD5-4GD-B Radeon R9 290X.
Using MSI Afterburner 300b17 with +100mv after 1173-1500 I was seeing artifacts and clearly running out of voltage. Increasing the Elpdia Ram above above 1500 hurt the Bench but very solid at 1500Mhz
Seems to me, disregarding the Safe Zone, the Ref R9 290X could do with another 35mv's to make a solid 1200-1500 clock.
MSI Afterburner shames CCC AMD Overdrive OC'g software.
Guess I'm about done playing with the Reference Design Cooler and will be mounting the Arctic Accelero Xtreme III and see about obtaining another 35mv's.
1170 x 1500 Mhz's - PERFECT No Artifacts
1200 x 1500 Mhz's - Minor Artifacts (Could do with a tad more Voltage)
Apparently there's a +.132 to +.141mv boost using an ASUS R9290X-4GD5 BIOS and ASUS GPUTweak 2.4.9.2. Reports are 1265 Mhz GPU and 1600 Mhz Memory Clocks - Humm - Can't seem to find the ASUS R9290X-4GD5 BIOS firmware or flashing Utility Online but do we need it?
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i7 2700k/ASUS P8Z68-V Pro Gen3/Corsair H110 AIO (running @ .996v/1600Mhz to 1.376v/4600Mhz 24/7 between 36 to 67C), 4 x's 4GB sticks of Samsung MV-3V4G3D-US DDR3 running at 1.34v/1866Mhz 9-9-9-24 1T with 4GB's assigned to a RAMDisk drive to handle Win7 64 Bit Sluff and negate writes to the SSD, Samsung 840 Pro 256 SSD, 2 x's WD5001AALS HDD's in Raid-0, 1 x's WD1002FAEX 1TB, ASUS DRW-24B1ST DVDRW, Hauppauge WinTV HVR-1250 PCIe, 2nd Intel NIC for Dual Networking, XFX 850W Pro Black Black Edition modular PSU, AMD Ref Gigabyte 1000Mhz R9 290X/Accelero Xtreme III, eVGA GTX 280 in reserve for Physic's-X support, Fractal Design ARC Midi R2 case, QX2510 Samsung PLS 2560x1440 res display at 120Hz.
TOTAL Investment on this Platform including 13% HST Tax Plus Shipping is approx $2,534.00 spent over a period of a year.
Aside from Mfgr's 10 to 15% price markup selling to the CDN Market the killer is the 13% HST Tax and cost of shipping in Canada. I pd $3000 for a 386-40 DX in 1994 - LOL.