We have PowerColor's Devil13 HD7990 6 GB, along with a GeForce GTX 690 from EVGA,
we're about to crown the fastest graphics card of 2012 right here and
right now.Our sample was part of a small, limited-production run (we'll come back to this in the conclusion). Only EVGA's offering is sitting on store shelves.
With its factory overclock, PowerColor's Devil13 HD7990 6 GB comes very close to the GeForceGTX 690 in our performance-oriented tests. Meanwhile, HIS' 7970 X2, which was shown off at Computex, but not necessarily a sure thing, is finally ready. Elevated clock rates are supposed to make the HIS card the fastest graphics card, period.
But do the benchmarks concur? Let's have a look at how these three boards stack up on paper first.
| Radeon HD 7970 X2, Radeon HD 7990, And GeForce GTX 690 | |||
|---|---|---|---|
| HIS 7970 X2 | PowerColor Devil13 HD7990 6 GB | EVGA GeForce GTX 690 | |
| Shader Units | 2 x 2048 | 2 x 2048 | 2 x 1536 |
| GPU Clock Rate | 1050 MHz | 925 / 1000 MHz | 915 MHz +Turbo |
| ROPs | 2 x 32 | 2 x 32 | 2 x 32 |
| GPUs | 2 x Tahiti XT | 2 x Tahiti XT | 2 x GK104 |
| Transistors (Billion) | 2 x 4.31 | 2 x 4.31 | 2 x 3.54 |
| Memory | 2 x 3 GB | 2 x 3 GB | 2 x 2 GB |
| Memory Bus | 2 x 384-bit | 2 x 384-bit | 2 x 256-bit |
| Memory Clock Rate | 1500 MHz | 1375 MHz | 1502 MHz |
Technically, the HIS card looks like it holds a strong position.
If those numbers translate into real-world performance, and if
micro-stuttering isn't a problem for AMD, it could be our winner. for complete review see the source
