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 ESTTest Setup
As we mentioned in our introduction, Intel's 9-series chipset were designed from the start to allow future compatibility with Broadwell. As a result with a BIOS update we're able to drop these processors into our existing MSI and ASUS Z97 boards, though not without some pre-release BIOS teething issues.
| Test Setup | |
| Processor | Intel i7-5775C, 4C/8T Intel i5-5675C, 4C/4T |
| Motherboard | MSI Z97A Gaming 6 ASUS Z97 Pro |
| DRAM | G.Skill RipjawsZ 4x4GB DDR3-1866 C9 at DDR3-1600 |
| Low End GPU | Integrated ASUS R7 240 2GB DDR3 Dual Graphics with R7 240 |
| Mid Range GPU | MSI R9 285 Gaming 2GB MSI GTX 770 Lightning 2GB |
| High End GPU | MSI R9 290X Gaming LE 4GB ASUS GTX 980 Strix 4GB |
| Power Supply | OCZ 1250W Gold |
| Storage Drive | Crucial MX200 1TB |
| Operating System | Windows 7.1 64-bit, Build 7601 |
| CPU Cooler | Cooler Master Nepton 140XL CLC |
Many thanks to...
We must thank the following companies for kindly providing hardware for our test bed:
Thank you to AMD for providing us with the R9 290X 4GB GPUs.
Thank you to ASUS for providing us with GTX 980 Strix GPUs and the R7 240 DDR3 GPU.
Thank you to ASRock and ASUS for providing us with some IO testing kit.
Thank you to Cooler Master for providing us with Nepton 140XL CLCs.
Thank you to Corsair for providing us with an AX1200i PSU.
Thank you to Crucial for providing us with MX200 SSDs.
Thank you to G.Skill and Corsair for providing us with memory.
Thank you to MSI for providing us with the GTX 770 Lightning GPUs.
Thank you to OCZ for providing us with PSUs.
Thank you to Rosewill for providing us with PSUs and RK-9100 keyboards.
Load Delta Power Consumption
We'll start things off with a look at power consumption. Power consumption was tested on the system while in a single NVIDIA GTX 770 configuration with a wall meter connected to the OCZ 1250W power supply. This power supply is Gold rated, and as I am in the UK on a 230-240 V supply, leads to ~75% efficiency > 50W, and 90%+ efficiency at 250W, suitable for both idle and multi-GPU loading. This method of power reading allows us to compare the power management of the UEFI and the board to supply components with power under load, and includes typical PSU losses due to efficiency.
We are reporting the power consumption difference when idle and during an initial OCCT load. This is slightly skewed by the adjustment up the efficiency chain of our power supply, showing lower power CPUs consuming a little more, but despite this the qualitative comparison is a still a good place to start.
Despite our test being almost qualitative, it is exciting to see that in our power consumption limit test both CPUs score around their TDP values.
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Zingam - Wednesday, June 3, 2015 - link
Well, nothing to see here! Move along, sir!Where is the Skylake?
ryrynz - Wednesday, June 3, 2015 - link
Ian, what driver was used? Intel just released a new one with some significant performance improvements (15.36.21.4222) Retest?Phartindust - Wednesday, June 3, 2015 - link
Please fix the graphs for GRID Min frames, or did the A10-7700k really beat everything else by 10fps?unityole - Thursday, June 4, 2015 - link
"due to time constraint we will save overclocking for part 2" care to explain why both you and tomshardware don't do OC? i have a feeling intel not allowing reviewers to do OC at first for sample, until at least few weeks or even months later.can't blame you though, need to continuously get sample from intel.
unityole - Thursday, June 4, 2015 - link
im extremely interested in OC, voltage used, power consumption and also performance is what we're after, before moving onto skylake.Notmyusualid - Thursday, June 4, 2015 - link
I'll second the request for identical-speed benchmarks too, thanks.albert89 - Thursday, June 4, 2015 - link
I've got to say I like what Intel has done to its iGPU side of the APU no matter how you read this review it actually doesn't look good for them. Overall Broadwell from these results seems to be between 1.5-3 times more expensive than AMD and if that doesn't both you, then its performance in the games above was between 1.6-6 points ahead while in one game beating AMD by 10 points (not good) while AMD beating Intel by 10 fps (nice). And don't forget we are comparing AMD (28nm) against Intel (14nm) which casts a not so flattering picture of Intel. And need I mention the latency gain over AMD, hardly to write home about by Intel. If your an all round user or a gamer the only thing you'll notice from Broadwell is the hole in your wallet.unityole - Thursday, June 4, 2015 - link
true that, most people here are for CPU performance though, doesn't hurt to have additional good IGPU in case of discrete dies on you, can still boot without dGPU and iGPU can still do things at 1080p.NvidiaWins - Thursday, June 4, 2015 - link
Literally no gain over Devils' Canyon.......zodiacfml - Friday, June 5, 2015 - link
Interesting. I could see a particular niche for this for users needing very good cpu performance and wants occasional gaming that is better than an entry level graphics card. Can't wait for overclocking results.I hope prices go down with Skylake's...