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 ESTReal World Performance
The dynamics of CPU Turbo modes, both Intel and AMD, can cause concern during environments with a variable threaded workload. There is also an added issue of the motherboard remaining consistent, depending on how the motherboard manufacturer wants to add in their own boosting technologies over the ones that Intel would prefer they used. In order to remain consistent, we implement an OS-level unique high performance mode on all the CPUs we test which should override any motherboard manufacturer performance mode.
All of our benchmark results can also be found in our benchmark engine, Bench.
Dolphin Benchmark: link
Many emulators are often bound by single thread CPU performance, and general reports tended to suggest that Haswell provided a significant boost to emulator performance. This benchmark runs a Wii program that raytraces a complex 3D scene inside the Dolphin Wii emulator. Performance on this benchmark is a good proxy of the speed of Dolphin CPU emulation, which is an intensive single core task using most aspects of a CPU. Results are given in minutes, where the Wii itself scores 17.53 minutes.
Skylake saw a good boost with our Dolphin benchmark, and it remains a single-thread driven event. The 100 MHz difference between the i3-6320 and i3-6300 amounts to just over a second difference, but one step back to the i3-6100 is another 42 seconds. This is one of the few instances where the 3 MB of L3 cache on the i3-6100 makes a significant difference. The i5-6600 sits in the middle of our i3 parts due to its lower CPU frequency but higher cache.
WinRAR 5.0.1: link
Our WinRAR test from 2013 is updated to the latest version of WinRAR at the start of 2014. We compress a set of 2867 files across 320 folders totaling 1.52 GB in size – 95% of these files are small typical website files, and the rest (90% of the size) are small 30 second 720p videos.
WinRAR is a variable thread test, so the CPUs with more threads all pull ahead of the i3 parts. Again, we see a crescendo from the i3-6320 to the i3-6300 and the i3-6100, with the i3-6100 being slightly further out due to its reduced L3.
3D Particle Movement v2
The second version of this benchmark is similar to the first, however it has been re-written in VS2012 with one major difference: the code has been written to address the issue of false sharing. If data required by multiple threads, say four, is in the same cache line, the software cannot read the cache line once and split the data to each thread - instead it will read four times in a serial fashion. The new software splits the data to new cache lines so reads can be parallelized and stalls minimized. As v2 is fairly new, we are still gathering data and results are currently limited.
The updated 3DPM benchmark likes good cache management and a high frequency with lots of threads. As from our Carrizo review, the AMD X4 845 does really well here, beating the i3-6100TE which has a much lower frequency. For the i3 parts, we see a regular staircase between the three, outpacing the much older FX-6350.
Web Benchmarks
On the lower end processors, general usability is a big factor of experience, especially as we move into the HTML5 era of web browsing.
Mozilla Kraken
Kraken also enjoys Skylake CPUs, with a preference for high frqeuency parts as well. The regular staircase is in effect between the three, showing how L3 cache makes little difference here.
Google Octane v2
Octane has a similar performance to Kraken, with the Skylake CPUs out in top with the staircase results. The i5-6600 sits in the middle, despite having four physical cores, but restrained to four threads. Because of this and our regular staircase, we can see that the L3 cache plays little role here and the threads are very lightweight. The resources on the FX CPUs unfortunately do not do well here.
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Morawka - Monday, August 8, 2016 - link
It's still suprising to see it on a low end CPU. i didnt know the i3's had ECC, now i'm thinking of building a FREENAS box off of one of theseSamus - Tuesday, August 9, 2016 - link
You'd be surprised how many servers actually ship with i3's...those HP ML10's are incredibly common and I've seen a number of Lenovo SMB servers run i3's.The i3 is more than adequate for most small business servers unless they plan to run Hyper-V. Most other CPU intense services are cloud-based now (I personally think a business is crazy to maintain their own exchange server these days when Microsoft offers a $4/month/mailbox turn-key solution)
Basically all servers do now is run the domain and a few basic services like file sharing and routing. SQL, Exchange, even Hyper-V are all inexpensive Azure\Office365 services. It really comes down to who costs more, your IT guy, or Microsoft. Odds are, the IT guy. Unfortunate because I am one.
jardows2 - Monday, August 8, 2016 - link
Low end consumer CPU's. Intel likes the product segmentation between Xeon's and i5/i7. This is also why Intel forced the use of the "c" series chipsets for the Xeon processors. a Xeon E3-1240 v5 is about $30.00 cheaper than an i7 6700, with a higher base frequency, but slightly lower turbo frequency.Of course, this helps people who are wanting server grade, but only need low end processing power. A Pentium or an i3 would be a great home server chip, but i5 or i7 overkill. If you are wanting to use a higher-end production computer with ECC, you probably are looking at higher-end processors than i5 or i7 anyway.
However, AMD includes the support in all their AM3+ processors, and I believe in all their FM2 processors as well. Not every motherboard supports it.
sheh - Monday, August 8, 2016 - link
Yes, I was referring to non-server CPUs.But why is it on the i3? Not that I mind, but the surprising aspect and the problem is that it's not on i5 and i7.
Black Obsidian - Monday, August 8, 2016 - link
jardows2 covers that in his/her product segmentation reference.If you want ECC on the low end, Intel is happy to sell you an i3. If your needs are any higher, Intel wants to push you towards a Xeon (and C-series chipset), which IIRC are higher-margin parts than the i5 and i7, and happen to have gone through additional server-related validation.
satai - Monday, August 8, 2016 - link
I understand this concept but I still don't get why there are cheap ECC enabled i3s instead of more expensive (but still cheaper than 4C Xeons) dual-core Xeons...extide - Monday, August 8, 2016 - link
Yeah, that is kinda weird, you would think Intel would do that, and create even more segmentation, which is something they definitely tend to like to do.rhysiam - Monday, August 8, 2016 - link
My guess would be (and full disclosure... this an educated guess): at some point the market becomes too niche and the higher profit margins get lost to the additional costs of segmenting product lines, keeping different lines in stock, etc. The cheapest Xeon quad core on Newegg is already only $90 more than the cheapest i3. How much more could Intel actually charge for a dual core Xeon over the i3, the only benefit of which is ECC? Then they'd have to maintain a whole new product line, manage stock levels, etc. My guess is that for the relatively small number of customers pairing a dual core with ECC memory, it's just more trouble than it's worth.satai - Tuesday, August 9, 2016 - link
Thet sounds like a believable explanation.DanNeely - Monday, August 8, 2016 - link
What exactly is the point of the Core i3-6098P supposed to be? Compared to the equally priced I3-6100, it's slower, has a weaker GPU, and a higher TDP. On paper I can't see any reason to buy the former instead of the latter?