FOR £100 MORE DOSH the Nvidia GTX580 delivers only about 10 per cent more clock speed and memory performance than the GTX480 that was launched back in March.
Identical in almost every way on the data sheets, the GTX580 has 512 Cuda cores compared to the GTX480's 480, a processor clock speed of 1,544MHz compared to 1,401MHz and a faster memory clock due to higher memory bandwidth.
Beyond these key differences the data sheet only shows the GTX580 having OpenGL 4.1 support, FP16 texture filtering and "adaptive z cull", where the GTX480 doesn't. Oddly the feature specifications of the GTX480 show 3D surround sound support but the GTX580 doesn't, yet the new card's marketing blurb says it supports that.
The Green Goblin, however, sees it differently of course and claims, "performance that is up to 30 per cent faster than the original GeForce GTX 480... Even in previous-generation DX9 and DX10 games, the GeForce GTX 580 is faster by up to 62 per cent, including in the blockbuster PC title StarCraft II."
One clear difference is the GTX580's "vapour chamber thermal solution," a vapour phase change cooler that the GTX480 does not have.
The other clear difference is the price, of course, with scan.co.uk selling the GTX480 as low as £316 including VAT, while the GTX580 is up for £410. µ