IGP performance: Tomb Raider
We'll kick things off with some IGP performance tests, to see how Haswell's revamped graphics options perform. As usual, we're testing games by measuring each frame of animation produced. For the uninitiated, start here for an intro to our methods.
Apparently, caching can do good things for graphics. The Core i7-4950HQ with Iris Pro graphics leads the pack in the FPS average sweeps—and in each of our latency-focused performance metrics, as well. The GT3 with eDRAM is even faster than the discrete Radeon HD 6570 GDDR5 when paired with the same four CPU cores. Although it only averages 37 FPS, Tomb Raider game quite playable at these settings on the Iris Pro—notice that the IGP doesn't spend any time working on frames that take longer than 50 milliseconds to produce. There's very little waiting on individual frames to be rendered, as the Iris Pro 5200's nice, flat latency curve also indicates.
The regular desktop GT2 part, the Core i7-4770K, also makes substantial strides compared to Ivy Bridge, nearly pulling even with AMD's A10-5800K. As expected, both of these desktop IGPs benefit from the move from DDR3-1600 (our stock config) to DDR3-2133 memory. Still, of the two, the AMD APU hangs on to the lead.