The Testing

A number of factors about the A8-7670K processor suggest that this is "another release of the same sort of stuff," albeit with increased frequencies. Nevertheless, we put the processor through our regular tests, to see what would happen. Our bench suite this time had one omission and one addition. For whatever reason, Linux Bench refused to run, with Ubuntu 14.04 throwing a hissy fit and not willing to start. I’m not sure if this was a BIOS issue or something more fundamental with the software stack, but it was odd. The addition, as the title of the review alluded to, is a Rocket League benchmark. At this time, we haven’t run it on many systems, but the A8-7670K is the sort of APU that enables games like Rocket League. Rocket League is a good contender for our 2016 CPU/APU benchmark suite on the integrated graphics side of things, and this serves as a good tester in the wild.

All of our regular benchmark results can also be found in our benchmark engine, Bench. Rocket League will be added in the future with the 2016 updates.

Test Setup

Test Setup
Processor AMD A8-7670K 
2 Modules, 4 Threads
3.6 GHz (3.9 GHz Turbo)
R7 Integrated Graphics
384 SPs at 756 MHz
Motherboards MSI A88X-G45 Gaming
Cooling Cooler Master Nepton 140XL
Power Supply OCZ 1250W Gold ZX Series
Corsair AX1200i Platinum PSU
Memory G.Skill 2x8 GB DDR3-2133 1.5V
Memory Settings JEDEC
Video Cards ASUS GTX 980 Strix 4GB
MSI GTX 770 Lightning 2GB (1150/1202 Boost)
ASUS R7 240 2GB
Hard Drive Crucial MX200 1TB
Optical Drive LG GH22NS50
Case Open Test Bed
Operating System Windows 7 64-bit SP1

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

Power consumption was tested on the system while in a single 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 U.K. on a 230-240 V supply, that leads to ~75% efficiency at greater than 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.

Power Consumption Delta: Idle to AVX

The TDP for the A8-7670K is up at 95W, similar to many other AMD processors. However, at load, ours drew only an additional 83W, giving some headroom.

AMD A8-7670K Overclocking

For this review, we even tried our hand at overclocking on the MSI A88X-G45 Gaming motherboard and managed to get 4.6 GHz stable.

Methodology

Our standard overclocking methodology is as follows. We select the automatic overclock options and test for stability with POV-Ray and OCCT to simulate high-end workloads. These stability tests aim to catch any immediate causes for memory or CPU errors.

For manual overclocks, based on the information gathered from previous testing, we start off at a nominal voltage and CPU multiplier, and the multiplier is increased until the stability tests are failed. The CPU voltage is increased gradually until the stability tests are passed, and the process is repeated until the motherboard reduces the multiplier automatically (due to safety protocol) or the CPU temperature reaches a stupidly high level (100º C+, or 212º F). Our test bed is not in a case, which should push overclocks higher with fresher (cooler) air.

Overclock Results

MSI’s motherboard doesn’t allow fixed voltages to be set but prefers to rely on an offset system only. There is a problem here that we are also fighting a DVFS implementation, which will automatically raise the voltage when an overclock is applied, with an end result of stacking the overclock voltage offset on top of the DVFS voltage boost. On our cooling system, the processor passed quite easily up to 4.6 GHz without much issue, but 4.7 GHz produced an instant blue screen when a rendering workload was applied. Hitting 4.6 GHz on a midrange AMD processor is quite good, indicating our sample is some nice silicon, but your mileage might vary.

The AMD A8-7670K Review Office and Web Performance
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  • tipoo - Wednesday, November 18, 2015 - link

    The FPS by percentile graph is nice, is that new to AT? Reply
  • Ian Cutress - Wednesday, November 18, 2015 - link

    Ryan does some percentile data in GPU reviews, and we did some stuff around the CFX/SLI sync issues. But we did the FPS by percentile graphs a bit in the Fable Legends testing. Some benchmarks provide the per-frame data by default, others do not (depends on how you're polling), and then there's some post-processing which takes longer than you think. It's a sort of graph that only 3/4 lines can be on it without going overboard. Reply
  • tipoo - Wednesday, November 18, 2015 - link

    Cool. I like it. Reply
  • tipoo - Wednesday, November 18, 2015 - link

    For GTA V, it looks like dual graphics on the same settings gives lower framerates than the 240 alone? Is that right? Other than that you see a pretty nice boost with it. Reply
  • jaydee - Wednesday, November 18, 2015 - link

    I noticed that too and was wondering Reply
  • yannigr2 - Wednesday, November 18, 2015 - link

    APUs are excellent solutions for systems without graphics. If you are going to add a graphics card, then excluding dual graphics, APUs seem much less attractive. A8 7600 is in my opinion the best cheap APU you can get for a system without a discrete graphics card, 78X0K are an option ONLY when you are definitely never going to add a graphics card and you want the best possible integrated GPU, without having to rob a bank for an Iris GPU.

    But even when AMD's APUs are the best option, people will still rush to make people avoid them. That's AMD's doing and we can only blame them. Recently someone asked for a cheap system to play an old FPS game. Videos on youtube where showing that an A8 7600 could play the game. That didn't stopped people rushing in the thread to insist that, that game wasn't going to be fun with under 140 fps. Yes, 140 fps. They didn't considered gaming peripherals, or a gaming monitor important, only 140 fps. Anything to "save" someone from an AMD APU and send him to Intel. Even if this means convincing someone paying at least $80-$100 that he may not have. At the same time the same persons blame ONLY AMD for the lack of competition.
    Reply
  • Dribble - Wednesday, November 18, 2015 - link

    AMD's solutions appeal to pretty well no one. If you don't have an add in gpu chances are you don't want to game in which case Intel wins hands down. If you want to game you'll buy a cheap graphics card in which case Intel wins hands down.

    The mythical buying market that want to game on a desktop but can't even afford a basic add on card just doesn't exist. We know this because AMD have been trying to sell apu's like this one for years now and no one is buying.
    Reply
  • Yorgos - Wednesday, November 18, 2015 - link

    That's false,
    I am gaming in 1080p and I play many games above 25fps with almost high settings.
    A good example is skyrim with the high definition mod that you can get from steam and I am constantly at 25 fps.
    All this was tested on my 8750k and 2400 MHz ram. What's your point of reference?

    OTOH, there is a shitload of ppl that play only MOBA games or FPS like cs where you don't need to spend 300 or more in a system. A 150$ system can get you constant 30 fps w/o a sweat.Plus you get a discrete grade GPU embedded with your cpu and you get all the goodies and the high quality drivers/support the discrete gpus get. Intel has none of the previous.
    Reply
  • Dribble - Wednesday, November 18, 2015 - link

    I would point you to AMDs CPU sales. No one is buying, AMD have been trying to sell cpu's like this one for years and failing - the market isn't there. Reply
  • medi03 - Thursday, November 19, 2015 - link

    I would point you to the fact that Netburst outsold superior Athlon 64s 4 to 1. Reply

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