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Technical Specifications

Partner Cards: Two Radeon R9 290s And Five 290Xs, Updated
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All of these cards are based on the same Hawaii GPU manufactured at 28 nm with either 2560 (in the case of the Radeon R9 290) or 2816 (for the Radeon R9 290X) shaders and a 512-bit memory bus. The differences between these cards, aside from their coolers, are limited to the core and memory clock frequencies.

Radeon R9 290GPU Clock MHz
(Boost)
Memory Clock
MHz
Memory Bandwidth
GB/s
Pixel Fillrate
GPixel/s
Texture Fillrate
GTexel/s
Sapphire Tri-X OC R9 2901000
1300
332.8
64.0
160.0
Gigabyte GV-R929OC-4GD R9 290 Windforce OC1040
1250
320.0
66.6
166.4
Radeon R9 290 Reference + Arctic Accelero Extreme III1100
1250
320.0
70.4
176.0
Radeon R9 290 Reference + NZXT Kraken G10 + X401100
1250
320.0
70.4
176.0
Radeon R9 290XGPU Clock MHz
(Boost)
Memory Clock
MHz
Memory Bandwidth
GB/s
Pixel Fillrate
GPixel/s
Texture Fillrate
GTexel/s
Asus R9290X-DC2OC-4GD5 R9 290X DirectCU II OC1050
1350
345.6
67.2
184.8
Sapphire Tri-X OC R9 290X1040
1300
332.8
66.6
183.0
Gigabyte GV-R929XOC-4GD R9 290X Windforce OC1040
1250
320.0
66.6
183.0
HIS R9 290X IceQ X² Turbo
1060
1350
345.6
67.8
186.6
MSI R9 290X Gaming 4G1040
1250
320
66.6
183

Of course, there’s more to the overall performance story than just the maximum GPU clock rate. As we've already seen, calling your GPU a 1000 MHz part is pointless if it cannot maintain that frequency. This is precisely the problem AMD's reference design suffers from. Once its target temperature is hit, the clock rate starts scaling back and performance follows suit.

We warmed up our various contenders and ran them in a loop while we recorded their frequencies.

R9 290 GPU Clock Frequency

R9 290X GPU Clock Frequency

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