The Sapphire Radeon HD 4890 Atomic and the Evga Geforce GTX 285 FTW are the fastest versions of their graphics cards series and are heavily overclocked ex factory. PC Games Hardware tests if 1 GHz chip frequency is enough for the Radeon to close the gap to the Geforce.
Evga GTX 285 FTW vs. Sapphire HD 4890 Atomic: Battle of the OC giants [Source: view picture gallery]
Evga GTX 285 FTW vs. Sapphire HD 4890 Atomic: Battle of the OC giants [Source: view picture gallery]
PC Games Hardware hosts the "Battle of the OC Giants” and tests if the balance of performance between the Geforce GTX 285 and the Radeon HD 4890 is shifted because of different overclocking capabilities. Since the cards from Sapphire and Evga represent the individual models of their series that have the highest ex factory frequencies (and are currently available), this is also a challenge for the title of the world's fastest single GPU graphics card.
We have already introduced highly overclocked Radeon and Geforce graphics cards in two of our recent reviews: The
Evga Geforce GTX 285 FTW and the
Sapphire Radeon HD 4890 Atomic. Now we want to use additional benchmarks to check if the HD 4890 with its GPU clock speed of 1,000 MHz GPU can beat the performance of Nvidia's (supposedly) more expensive flagship.
In advance we want to note that we are well aware of the huge difference in price - in this regard the Radeon has an almost unbeatable advantage. But the Geforce can offer better visual quality options (depending on one's own taste of course), especially in matters of Texture Filtering.
Below you can see the technical specifications of the competitors as well as the default versions of the Geforce GTX 285 and the Radeon HD 4890.
| Graphics chip/card |
Radeon HD 4890 |
Sapphire Radeon HD 4890 Atomic |
Geforce GTX 285 |
Evga Geforce GTX 285 FTW |
| Chip |
RV790 |
RV790 |
GT200(b) |
GT200(b) |
| DirectX version |
DX 10.1 |
DX 10.1 |
DX 10.0 |
DX 10.0 |
| Chip frequency (MHz) |
850 |
1,000 (+17.6 %) |
648 |
720 (+11.1 %) |
| Shader ALU frequency (MHz) |
850 |
1,000 (+17.6 %) |
1,476 |
1,620 (+9.8 %) |
| Memory frequency (MHz) |
1,950 |
2,100 (+7.7 %) |
1,242 |
1,390 (+11.9 %) |
| VRAM amount (MiByte) |
1,024 |
1,024 |
1,024 / 2,048 |
1,024 |
| Memory bus (Bit) |
256 |
256 |
512 |
512 |
| Type of memory |
GDDR5 |
GDDR5 |
GDDR3 |
GDDR3 |
| MAD (GFLOPS) |
1,360 |
1,600 (+17.6 %) |
708.5 |
777.6 (+9.8 %) |
| Texture fillrate (MTex/s) |
34,000 |
40,000 (+17.6 %) |
51,840 |
57,600 (+9.8 %) |
| Memory bandwith (MByte/s) |
124,800 |
134,400 (+7.7 %) |
158.976 |
177,920 (+11.9 %) |
| Multi GPU |
Crossfire X |
Crossfire X |
SLI, 3-W.-SLI |
SLI, 3-W.-SLI |
| PCI-E. connectors (6-Pin/8-Pin) |
2 x / 0 x |
1 x / 1 x |
2 x / 0 x |
2 x / 0 x |
| PCB length (mm, ca.) |
241 |
241 |
268 |
268 |
| Slots blocked |
2 |
2 |
2 |
2 |
For additional details like noise level, power consumption and temperatures, please see our reviews of the Evga Geforce GTX 285 FTW or the Sapphire Radeon HD 4890 Atomic.