Overclocked Results

As part of our reviews here at AnandTech we have recently been including a section on overclocked results, because in the end a +10% overclock does not always mean an extra +10% on performance. For our overclocking escapades mentioned earlier in the review, while we were able to achieve 4.6 GHz on the Core i7-5960X, the sweet spot was around 4.3 GHz at a very comfortable temperature. This leads to a +43% overclock over the base frequency, similar to what we saw with Sandy Bridge-E overclocking.

For our overclocking tests, we are using the same graphs as in the last two pages, but adding the data from our overclocked Sandy Bridge-E, Ivy Bridge-E, Haswell and Haswell-E CPUs as well, tested fresh for this review on our latest benchmark suite.

In the past overclocking was all about getting the same or better performance for a lower cost, however with Ivy Bridge-E due to its lower frequency, it was a battle to keep on par with Sandy Bridge-E. Now that Haswell-E has the same frequency deficit (200 MHz) but a +8% increase in IPC, it begs the question if Sandy Bridge-E users with good 4.8 GHz+ CPUs should consider upgrading (for anything other than more cores and an upgraded chipset).

SYSmark 2014

SYSmark 2014 - Overall, Overclocked

SYSmark sees the biggest uplift in its media and office benchmark suites when overclocked, although the financial suite does enjoy the more cores to put the 5960X ahead.

HandBrake v0.9.9: link

HandBrake v0.9.9 LQ Film, Overclocked

HandBrake v0.9.9 2x4K, Overclocked

Interestingly the overclocked 5960X does aid low quality conversion, showing that with enough frequency all the cores can be constantly fed with data. The 5960X takes the top two spots for 4K conversion.

Agisoft Photoscan – 2D to 3D Image Manipulation: link

Agisoft PhotoScan - Total Time, Overclocked

Photoscan also enjoys overclocking in combination with the cores, but the 3960X overclocked will beat the 5960X at stock despite the extra cores of the 5960X.

Dolphin Benchmark: link

Dolphin Emulation Benchmark, Overclocked

Dolphin prefers single threaded speed, so the Haswell CPUs at 4.7 GHz win here. Haswell does well in Dolphin's emulation overall, hence why the older extreme processors, even when overclocked, are further down.

WinRAR 5.0.1: link

WinRAR 5.01, 2867 files, 1.52 GB, Overclocked

More top spots for the 5960X, with the two extra cores at stock beating the other extreme processors.

Hybrid x265

Hybrid x265, 4K Video, Overclocked

Cinebench R15

Cinebench R15 - Single Threaded, Overclocked

Cinebench R15 - Multi-Threaded, Overclocked

3D Particle Movement

3D Particle Movement: Single Threaded, Overclocked

3D Particle Movement: MultiThreaded, Overclocked

FastStone Image Viewer 4.9

FastStone Image Viewer 4.9, Overclocked

When overclocked to 4.3 GHz, the 5960X would seem to produce a similar experience in FastStone to the 4790K at stock. This makes sense as the 4790K at stock is 4.4 GHz in turbo mode.

POV-Ray 3.7 Beta RC14

POV-Ray 3.7 Beta RC4, Overclocked

Gaming Benchmarks

F1 2013

F1 2013 SLI, Average FPS, Overclocked

The overclocked 5960X scores a few points in minimum frame rates, giving another +20% while in SLI.

Bioshock Infinite

Bioshock Infinite SLI, Average FPS, Overclocked

Bioshock average frame rates seem to get a small boost when overclocked, but minimum frame rates are more responsive to the 84W and 88W parts. The variation might be more indicative of the benchmark as a whole, as it only takes one errant slow frame to produce a low result in the minimum FPS results.

Tomb Raider

Tomb Raider SLI, Average FPS, Overclocked

Sleeping Dogs

Sleeping Dogs SLI, Average FPS, Overclocked

Battlefield 4

Battlefield 4 SLI, Average FPS, Overclocked

Gaming Benchmarks Intel Haswell-E Conclusions


View All Comments

  • wallysb01 - Saturday, August 30, 2014 - link

    This really only makes sense if you don’t have “real” work to do on your computer. Or you only have work that utilizes 1-2 cores. Look at how these bench marks stack up against the 5960: http://www.anandtech.com/bench/product/47?vs=1317. For single threaded stuff its 20-30% faster and for multithreaded stuff its around 3x faster.

    That’s HUGE if you’re actually putting your computer through a tough workload. Instead of something finishing in month it finishes in 10 days? You don’t think that’s worth it?

    And with the i7-920, are you on a motherboard with SATA III, or do you have PCIe expansion for SATA III. For those I/O limited, SATA III with a couple of striped SSDs is a tremendous improvement. Over what was around 5 years ago.
  • TonyZ - Sunday, August 31, 2014 - link

    Same here, run my 2500K at 4.2 on air and I just haven't seen any reason to upgrade as of yet and I've been running it for near 3 years now.... We need something new and groundbreaking... Reply
  • chinmi - Sunday, August 31, 2014 - link

    came here to say that :)
    it may be 10% slower, but it's 90% cheaper.
  • TiGr1982 - Tuesday, September 2, 2014 - link

    These are different classes of hardware even for considerab=bly different purposes.
    It's like reading the review of Escalade and saying then, "I'll stick to my Focus then" :)
  • TiGr1982 - Tuesday, September 2, 2014 - link

    I meant, comparison of 2500K and Haswell-E is like comparing Escalade and Focus.

    Crazy forum engine; AT really should look around, notice that better forums are on the web for 10+ years, and ask some web developer to make a normal forum (and not like a student alpha version course project). It's a bit of a shame for such a good website. Sorry for abruptness, but this is indeed the case.
  • Stas - Wednesday, September 3, 2014 - link

    Likewise. 4.4Ghz is plenty. Lived through video card upgrades and still GPU limited with HD7950 o/c. Reply
  • Stas - Wednesday, September 3, 2014 - link

    *3 video card upgrades Reply
  • q2klepto - Monday, September 8, 2014 - link

    Yup - thankfully new games are almost completely limited by the GPU at high resolutions/quality (1440p/High+). I think my i7 2600k@4.7Ghz and R9 290X can last another year at least, and i can afford to put it underwater instead of upgrading.

    For normal desktop use, an SSD and 8GB+ of ram will burn thru everything without a prob
  • imaheadcase - Friday, August 29, 2014 - link

    Correction? I think you mean "also featuring 6 cores"

    "The entry level model is a slightly slower i7-5820K, also featuring eight cores and DDR4-2133 support. The main difference here is that it only has 28 PCIe 3.0 lanes. When I first read this, I was relatively shocked, but if you consider it from a point of segmentation in the product stack, it makes sense."
  • Ian Cutress - Friday, August 29, 2014 - link

    Corrected :) Reply

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