The Haswell Ultrabook Review: Core i7-4500U Tested
by Anand Lal Shimpi on June 9, 2013 9:00 AM ESTCPU Performance
With Haswell on the desktop we showed a 0 - 19% increase in performance over Ivy Bridge at the same clocks. With Haswell ULT, similar parts have identical turbo frequencies but Haswell does drop the base clock by 100MHz in this case. There’s also a lower TDP, and that TDP now includes the PCH as well, potentially decreasing the time spent in max turbo.
The end result is effectively no gain in performance across our benchmarks. PCMark 7 and single-threaded Cinebench show a 3 - 6% increase in performance, while multithreaded Cinebench and x264 show a 3 - 5% decrease in performance.
As we saw in our battery life tests, it looks like there are some larger performance gains to be had in power limited scenarios. The explanation there makes sense. Haswell ULT’s lower TDP may cap max frequencies more than on Ivy Bridge, but at lower frequencies the CPU cores are less likely to bump into the chip’s TDP limits - allowing Haswell’s IPC advantage to really shine. When plugged in however I wouldn’t expect CPU performance any different from Ivy Bridge.
| CPU Performance Comparison | ||||||||
| PCMark 7 | Cinebench 11.5 (single threaded) | Cinebench 11.5 (multithreaded) | x264 5.0.1 - 1st pass | x264 5.0.1 - 2nd pass | PCMark 8 Home (Power Saver) | PCMark 8 Creative (Power Saver) | ||
| Core i7-3517U | 5058 | 1.25 | 2.8 | 29.67 | 5.55 | 1595 | 1391 | |
| Core i7-4500U | 5216 | 1.33 | 2.7 | 28.4 | 5.25 | 1777 | 1583 | |
| Haswell Advantage | 3.1% | 6.4% | -3.5% | -4.3% | -5.4% | 11.4% | 13.8% | |
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Rogatti - Sunday, June 9, 2013 - link
GPU Intel.........no thanks !!!!!Kaveri ... where is you !!! ... do not let me down !
A5 - Sunday, June 9, 2013 - link
Anything based on Steamroller isn't going to be able to touch these battery life numbers.If you don't care about battery life, you can get much better value for your money outside of the ultrabook form factor.
Samus - Sunday, June 9, 2013 - link
The GPU performance is slowly creeping up to AMD; AMD won't be able to use their GPU as a crutch much longer.Death666Angel - Sunday, June 9, 2013 - link
Just the ridiculously lower price.kyuu - Monday, June 10, 2013 - link
Yeah, because AMD isn't going to be improving their iGPU tech at all...?nunomoreira10 - Monday, June 10, 2013 - link
not really, intel currently uses an abnormal 180mm2 of die area on 22nm (hd5000) for the same perfomance and efficiency of an 80mm2 28nm amd gpu.the are trying to go all out, but their gpu tech basically sucks
smartypnt4 - Monday, June 10, 2013 - link
Where'd you see the analysis of how much space HD5000 takes? I haven't seen anything on that. Maybe I just missed it...180mm2 of die area for Haswell ULT total is what's been reported, and AMD's Trinity 4C at 28nm is 246mm2. The number of transistors in each is basically identical. The difference comes in where Intel and AMD spend transistors. I'd wager that AMD spends more transistors in GPU, and Intel spends more in CPU.
To be frank, I don't see how you can assert that Intel's <90mm2 of graphics on an integrated chip has appreciably lower efficiency than any other mobile part on the market. I could be wrong, but I just don't see it as that far off.
smartypnt4 - Monday, June 10, 2013 - link
Never mind. Found Anand's analysis. There's no way that's correct though. If 1/2 of GT3 takes up 87mm2, then full GT3 takes up 174mm2. Haswell 2C ULT is a 184mm2 die. There's no way the GPU takes up 90% of the chip. Over half, sure. but 90% is ridiculously high. Something in the 75-80% range is the absolute highest I'd expect.Homeles - Sunday, June 9, 2013 - link
A bit disappointed to see the CPU performance largely stand pat compared to Ivy bridge, but it nailed the one major thing that mattered: battery life.GPU performance isn't awfully inspiring either. I suppose that I won't see the performance gains I was hoping for until Broadwell.
Oh well. I suppose Fall IDF isn't too far away.
meacupla - Sunday, June 9, 2013 - link
Well, i7-4500U is clocked 100mhz slower, but haswell IPC is about 10% better, so obviously CPU performance is not going to differ by much.GPU performance for HD5000 is pretty much what was expected from early intel slides. Iris pro is what was touted as performing up to 'more than 2x' performance.