![]() We noticed this back in our Iris Pro review, but Intel needs some serious driver optimization if it's going to compete with NVIDIA's performance even in the mainstream mobile segment. Where it falls short however, it does by a fairly large margin. With a few exceptions, the Iris Pro 5200 in the new iMac appears to be performance competitive with the 750M. The comparison of note is the GT 750M, as that's likely closest in performance to the GT 640M that shipped in last year's entry-level iMac. I’m not one to normally care about performance per mm^2, but in Intel’s case it’s a concern given how stingy the company tends to be with die area. I do have concerns about the area efficiency of Intel’s Gen7 graphics. With Broadwell I’m expecting to see another healthy increase in performance, and hopefully we’ll see Intel continue down this path with future generations as well. Iris Pro 5200’s performance is still amazingly potent for what it is. At launch Apple provided a fairly old version of Iris Pro drivers for Boot Camp, I updated to the latest available driver revision before running any of these tests under Windows. In other words, you should expect lower performance across the board from the iMac compared to what we reviewed over the summer. The 4570R also features a lower max GPU turbo clock of 1.15GHz vs. This is a 65W part clocked at 2.7GHz but with a 3GHz max turbo and only 4MB of 元 cache (still 128MB of eDRAM). The new entry-level 21.5-inch iMac is offered with no CPU options in its $1299 configuration: a Core i5-4570R. We benchmarked a Core i7-4950HQ, a 2.4GHz 47W quad-core part with a 3.6GHz max turbo and 6MB of 元 cache (in addition to the 128MB eDRAM L4). ![]() There are some pretty big differences between what ships in the entry-level iMac and what we tested earlier this year however. The new iMac is pretty good, but what drew me to the system was it’s among the first implementations of Intel’s Iris Pro 5200 graphics in a shipping system. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |