Radeon HD 7990 And GeForce GTX 690 shortreview

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