The Skylake Core i3 (51W) CPU Review: i3-6320, i3-6300 and i3-6100 Tested
by Ian Cutress on August 8, 2016 9:00 AM ESTOffice Performance
All of our benchmark results can also be found in our benchmark engine, Bench.
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 different stages of Photoscan have different preferences for frequency and threads, but all the results are in Bench. In this case having threads matters, with the old 8-thread FX CPU barely getting ahead of the Core i3 parts. The i5 takes the lead, showing that having physical cores helps with cache management. This is further reinforced by our results staircase, which put the i3-6320 and i3-6300 at roughly equal timings but the i3-6100 almost 4% behind.
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 eats threads, high IPC and high frequency for breakfast. In the single thread test, the high Intel IPC shines through, and our i3 parts sit in unison with AMD behind by up to 40%. In multithreaded land, the 6/8 thread FX processors go ahead of the i3s as expected, and our staircase slightly deviates for the i3-6100 showing that L3 cache creep is slowly coming in.
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.
The high IPC of the Skylake parts makes a difference for the smaller frame conversion, while threads come into play for the larger resolution frames. In both cases, the regular staircase shows a lack of issues with the L3 cache differences, but it is interesting to see the X4 845 hot on the heels for the high resolution frames despite its cache arrangement. The FX-6350 sits on par with the i3-6100, showcasing the difference between a six-thread much older processor and a four thread latest process part.
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.
Hybrid is similar to HandBrake, and we again have a regular staircase.
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tipoo - Monday, August 8, 2016 - link
Looks like even a Skylake i3 may be able to retire the venerable 2400/2500K, higher frame rates and better frame times at that. However a native quad does prevent larger dips.Kevin G - Monday, August 8, 2016 - link
I have a feeling much that is due to the higher base clock on the SkyLake i3 vs. the i5 2500K. Skylake's IPC improvements also help boost performance here too.The real challenge is if the i3 6320 can best the i5 2500k as the same 3.9 Ghz base clock speed. Sandy Bridge was a good overclocker so hitting those figures shouldn't be difficult at all.
tipoo - Monday, August 8, 2016 - link
That's true, overclocked the difference would diminish. But you also get modernities like high clocked DDR4 in the switchover.At any rate, funny that a dual core i3 can now fluidly run just about everything, it's two cores are probably faster than the 8 in the current consoles.
Lolimaster - Monday, August 8, 2016 - link
Benchrmarks don't tell you about the hiccups when playing with a dual core. Specially with things like Crysis 3 or even worse ROt Tomb Raider where you get like half the fps just by using a dual core bs a cheapo Athlon 860K.gamerk2 - Monday, August 8, 2016 - link
That's why Frame Times are also measured, which catches those hitches.Samus - Tuesday, August 9, 2016 - link
I had a lot of issues with my Sandy Bridge i3-2125 in Battlefield 3 circa 2011 with lag and poor minimum frame rates.After long discussions on the forums, it was determined disabling hyper threading actually improved frame rate consistency. So at least in the Sandy Bridge IPC, and probably dating back to Nehalem or even Prescott, Jackson Technology or whatever you want to call it, has a habit of stalling the pipeline if there are too many cache misses to complete the instruction. Obviously more cache resolves this, so the issue isn't as prominent on the i7's, and it would certainly explain why the 4MB i3's are more consistent performers than the 3MB variety.
Of course the only way to prove if hyper threading is causing performance inconsistency is to disable it. It'd be a damn unique investigation for Anandtech to do a IPC improvement impact on it's affect on hyper-threading performance over the years, perhaps even dating back to the P4.
AndrewJacksonZA - Wednesday, August 10, 2016 - link
HOW ON EARTH DID I MISS THIS?!?!Thank you for introducing me to Intel's tech known as "Jackson!" This is now *SO* on my "To Buy" list!
Thank you Samus! :-D
bug77 - Monday, August 8, 2016 - link
Neah, I went i5-2500k -> i5-6600k and there's no noticeable difference. The best part of the upgrade was those new I/O ports on the new motherboard, but it's a sad day when you upgrade after 4 years and the most you have to show is you new M2 or USB 3.1 ports (and USB 3.1 is only added through a 3rd party chip).Sure, if I bench it, the new i5 is faster, but since the old i5 wasn't exactly slow, I can't say that I see a significant improvement.
Now, if you mean that instead of getting an i5-2500k one can now look at a Skylake i3, I'm not going to argue with you there. Though (money permitting) the boost speed might be nice to have anyway.
Cellar Door - Monday, August 8, 2016 - link
This is a poorly educated comment:a) Your perceived speed might be limited by your storage
b) You don't utilize your cpu's multitasking abilities fully(all cores)
Duckeenie - Monday, August 8, 2016 - link
Why did you continue to post your comment if you believed you were making poorly educated points?