Intel Iris Pro 5200 Graphics Review: Core i7-4950HQ Tested
by Anand Lal Shimpi on June 1, 2013 10:01 AM ESTGRID 2
GRID 2 is a new addition to our suite and our new racing game of choice, being the very latest racing game out of genre specialty developer Codemasters. Intel did a lot of publicized work with the developer on this title creating a high performance implementation of Order Independent Transparency for Haswell, so I expected it to be well optimized. I ran out of time in testing this one and couldn't include all of the parts here. I did use GRID 2 as an opportunity to look at the impact of MSAA on Iris Pro's performance.
Without AA, Iris Pro does well, with the 650M pulling ahead by low double digits. Mobile Trinity is roughly half the speed of Iris, with desktop Trinity bridging the gap.
Turn up the resolution, add AA, and NVIDIA pulls ahead by a large margin. The desktop Trinity part also inches ahead.
Ramp up the quality settings however and Iris Pro ends up ahead of the GT 650M. Desktop Trinity falls behind considerably, likely running into memory bandwidth limitations. Crystalwell seems to save Iris Pro here.
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tipoo - Saturday, June 1, 2013 - link
It still seems to me that this misses where it would benefit most: 13 inch laptops, which currently mostly use dual core processors. GT3e would make something like the Retina MBP 13" much more appealing for instance, but it's paired with processors such that the wattage would be too high.tipoo - Saturday, June 1, 2013 - link
Oh and I wanted to ask, if the integrated graphics are disabled can the CPU still tap into the eDRAM?Ryan Smith - Saturday, June 1, 2013 - link
Yes, it's a dedicated cache for both the CPU and the GPU. However it's very unlikely you're going to run into any scenario that uses a Crystalwell-equipped part in such a manner. It's not being sold in socket form, so it will go to OEMs, who in turn would only use it if they didn't include a dGPU.jeffkibuule - Saturday, June 1, 2013 - link
So pretty much, unless you've got some huge beefy GPU that would absolutely suck up power compared to just using Iris Pro graphics, no one would opt for that SKU?shiznit - Saturday, June 1, 2013 - link
Right on. A dual core model for the 13" rMPB would have me selling my 2012 immediately. Now I need to decide if I can live with the 15" or even bother.moep - Saturday, June 1, 2013 - link
If i interpreted the results of this article correctly, I suspect that the 15" MBP is probably going to get a new and even thinner form factor with this refresh. (one chip less, fewer VRM related parts, lower combined TDP)A 15" rMBP approaching the weight of a 15" Macbook Air would be very interesting, although a part of me hoped that Apple would wait until Broadwell to ditch the dGPU in the 15".
Such a step back in GPU performance with the Retina display is surely not going to be very pleasant in 3D applications.
Galatian - Saturday, June 1, 2013 - link
I actually hope/suspect, that Apple will go the other road: use a discrete graphic solution on the 15" rMBP until Broadwell comes out, but have a cTDPdown version of the 4850HQ on the 13" rMBP. Maybe they can even get the normal TDP version in there; after all it has the same (good) cooling the 15" rMBP has and I have never heard the fans on mine. I think Apple really designed it with Haswell in mind, so let's see what they'll bring on during the next few weeks.tipoo - Saturday, June 1, 2013 - link
That's certainly the best case, I really hope they go down that road. The rMBP as a quad with Iris Pro would really make it worth the Pro name.vFunct - Sunday, June 2, 2013 - link
They'll probably stick with the built in GPU for the 13" model and a discrete GPU for the 15" model, which is what they do right now.Apple's top-end MacBook Pro has always had the highest end discrete GPU available.
Spunjji - Tuesday, June 4, 2013 - link
I'm guessing you mean "for a given power usage", as there are definitely faster GPUs out there than the 650M.