The Intel Broadwell Desktop Review: Core i7-5775C and Core i5-5675C Tested (Part 1)
by Ian Cutress on June 2, 2015 7:45 AM ESTProfessional Performance: Windows
Agisoft Photoscan – 2D to 3D Image Manipulation: link
Agisoft Photoscan creates 3D models from 2D images, a process which is very computationally expensive. The algorithm is split into four distinct phases, and different phases of the model reconstruction require either fast memory, fast IPC, more cores, or even OpenCL compute devices to hand. Agisoft supplied us with a special version of the software to script the process, where we take 50 images of a stately home and convert it into a medium quality model. This benchmark typically takes around 15-20 minutes on a high end PC on the CPU alone, with GPUs reducing the time.
The presence of Crystal Well had a small effect on Photoscan, occurring mostly in the second phase of the calculation which is the one that also has an option to enable the GPU, indicating that memory bandwidth is an potential limitation in that segment.
Cinebench R15
Cinebench is a benchmark based around Cinema 4D, and is fairly well known among enthusiasts for stressing the CPU for a provided workload. Results are given as a score, where higher is better.
Cinebench is a historically CPU-limited benchmark, and the results show this again here. The fact that the 3.6GHz Broadwell-based i5-5675C performs so closely to the 3.9GHz Haswell-based i5-4690 is a promising sign here, as it means that despite being a mere "tick" in Intel's development efforts, there are tangible IPC increases on the desktop from Broadwell.
HandBrake v0.9.9: link
For HandBrake, we take two videos (a 2h20 640x266 DVD rip and a 10min double UHD 3840x4320 animation short) and convert them to x264 format in an MP4 container. Results are given in terms of the frames per second processed, and HandBrake uses as many threads as possible.
While no obvious improvement was seen in the low quality conversion, the double UHD conversion put the i7 above what was otherwise expected.
Hybrid x265
Hybrid is a new benchmark, where we take a 4K 1500 frame video and convert it into an x265 format without audio. Results are given in frames per second.
Unlike the Handbrake H.264 tests, the Hybrid x265 tests show a clear uptick in performance on the Broadwell processors. It is not fast enough to catch the i7-4790K and its 4.4GHz turbo clockspeed, but we see the i5-5675C shoot well past the i5-4690 despite the clockspeed deficit. Whether this is due to Broadwell architecture enhancements, Crystal Well acting as an L4 cache, or a combination of the two is difficult to determine, but the end result is substantial.
Facebook
Twitter
RSS
196 Comments
View All Comments
nandnandnand - Tuesday, June 2, 2015 - link
A10-7870K is listed as $137 and A10-7850K as $173Ian Cutress - Tuesday, June 2, 2015 - link
$137 is the launch price of the A10-7870K.$173 was the launch price of the A10-7850K.
We mentioned why we do launch pricing in our graphs in previous reviews, but it comes down to our graphs not being dynamically linked to a retailer and we have to pick a point that's suitable over time. Launch pricing does that, even though there might be future discounts over time.
nandnandnand - Tuesday, June 2, 2015 - link
Ok, that makes sense.Business opportunity: add a drop down to switch from launch price to "live price" for Newegg/Amazon/etc., hyperlink live prices, get a cut from every click.
AS118 - Saturday, June 6, 2015 - link
I agree with nand. Other sites do this, and it's helpful to me because I often read reviews to make a purchase anyway, and it helps me see what the price is right now.FlushedBubblyJock - Sunday, June 14, 2015 - link
Take a look at how much the GTX980 stomps the amd 290X above - in the review here where they aren't concerned and paying attention and picking the best games for amd gimpy hardware.Just look at the FPS difference... let it sin in - the reviewers haphazardly reveal the truth when they are not intending to.
bloodroses75 - Wednesday, June 17, 2015 - link
Oh look, a current gen video card beat a last gen card that is just over half the price.You may want to try waiting until the 300 series is released/ bench marked before spouting how superior one is over the other. If the 300 series ends up being a dud (which it kinda looks like it will), so be it; at least it will be an 'apple to apple' comparison.
MrSpadge - Tuesday, June 2, 2015 - link
You don't need dynamically updated prices. simply pick the prices around the release date of the new hardware. If the price of a 1 or 2 years old comparison chip was lowered significantly (yes, this still happens sometimes), comparing it based on launch price is misleading and will always make some people shout "unfair". You easily fix this.taltamir - Tuesday, June 9, 2015 - link
I agree, the obvious thing to do is use the price as it is during the time the article was written.That means launch price for the item being reviewed and current prices for all items it is being compared to
ImSpartacus - Tuesday, June 2, 2015 - link
Since you have to do a "snapshot" pricing for these reviews, you may want to consider looking at average pricing at the time of review. At least then the time frame for each snap shot is the same.nathanddrews - Tuesday, June 2, 2015 - link
There's a fine line between "just enough" information and "too much". Prices for CPUs vary greatly depending on where you buy them.