A10 7850K APU not benching FPS as expected

[JammyB]

I've just put togeather a smal MicroATX APU system for the livingroom this morning:

APU: AMD A10-7850K 3.7GHz Quad-Core
MOBO: ASRock FM2A88M EXTREME4+ Micro ATX FM2+
RAM: AMD R9 Gamer Series 8GB (2 x 4GB) DDR3-2400

I intend to improve on it but but at the moment I'm using the Stock cooler and paste, and a 120GB 2.5" SATA drive robbed from an old laptop

fresh install of Win 7 64 ultimate
The latest Catalyst Control Center installed,
The latest FW on the Motherboard.

the install all went smoothly and the RAM is running at 2400 after enabling AMP on the motherboard.

I ran a quick test with CineBench and Furmark and they both show a below expected result.

CineMark came in at only 20FPS on the Open GL test and 304cb on the CPU test.
In tests I've found on line like this one: http://www.hitechlegion.com/reviews/processors/38897-amd-a10-7850k-kaveri-quad-core-apu-review?showall=1&limitstart= theyre hitting 44FPS and 315cb before overclocking

FurMark 1920×1080 fullscreen benchmark test came in at 2FPS. score 125
In this test: http://www.geeks3d.com/20140127/amd-kaveri-a10-7850k-with-radeon-r7-spectre-gpu-review-test/ they scored 695 points, 11FPS

I've been monitoring temp in Overdrive (I havn't changed any settings) and they all stay with in the "Thermal Margin" during the tests.



I'm computer savvy but I havn't done much of this sort of thing before. can anyone help me find the issue please? could it be something to do with the old HDD?

[chiefputsa☒lag]

could it be something to do with the old HDD?

possible.
when comparing results, similar hardware must be taken into consideration.

your monitor resolution vs 1920x1080.
your 120gb sata hdd vs storage of the benchmarking team.
your ram latency/speed vs ram latency/speed of the benchmarking team.

you did not state if your 2400mhz speed ram has latency of 9, 10, 11 (bad).

[_I_]

makes sure the gpu drivers are installed correctly

[JammyB]

Hi Thanks for the reply chief.
The Rez was 1920x1080 as with the two examples above and the RAM, the R9 Gamer 2400 was the same as the first example. They are the the nearest examples I could find to my actual settup.
The R9 RAM has a latency of 11 apparently, I'm not sure what the effect of that is but I bought it on a recomendation from the tech support engineer at ASRock who said he'd had good results with that settup on the bench.

I'll try re-installing my drivers thanks

[_I_]

2400 is good, but cl11 is pretty high latency for ddr3
to compare kits
speed / cl = value (higher = better)

2400 / 11 = 218

it is better than these, but not by much
1866 cl9 = 207
1600 cl8 = 200

could go better with a lower cl kit with slower speeds
2133 cl8 = 267
2400 cl10 = 240
2133 cl9 = 237
1866 cl8 = 233
1600 cl7 = 229

and there are 2400 cl9 (266) kits, but they are very spendy

on the apu ram speed/timings is directly proportianal to gpu performance

imho, it would have been better to buy a cheap ram kit 1600 cl9 and use a dedicated gpu instead of the apus gpu, r7 250 or gtx750 can beat the gpu all around
and for a better cpu, an i3 or pentium g can beat that and cost less

[Rove]

Maybe your RAM kit is not running in dual channel mode?

Try and take a look at your motherboard and see which channels you need to install 2 sticks into to be in dual channel mode.

You do have 2 sticks right?

[JammyB]

I guess I'm still learning but I did deliberatly go with an APU to keep the build small and tidy. It has to be allowed in the living room by the Boss and she wasn't going to let me have a tower!

Yes two sticks, they are in A1 and B1 which is how I understand they should be.

I'm just installing the latest stable drivers instead of the Beta.

[_I_]

should be in dual ch mode, use cpuz to verify
http://www.cpuid.com/softwares/cpu-z.html

also check the driver settings
if you are running it on a tv, and its gpu scaling, it will cut down its performance

[JammyB]

Thanks again.
I checked it was in Dual memory and GPU scaling is off.
I seem to have improved matters by changing a coupls of settings on the motherboard. the default adaptor was set to PCIe. Changing it to on board I am now getting cineBench FPS results of either about 19-21 FPS or more often 46-49FPS. I was expect results in the high 40s.
I'm going to do some more real-life testing with RAGE when it finally downloads.
There's a couple of other BIOS settings I'm not sure about.

IOMMU enable/dissable
and
how much RAM to share with the iGPU. it defaults to 1Gig but it can be set to 2Gig.
Anyh thoughts on those?

[Rove]

I'd say 4GB. My A10-6800K uses 512MB dedicated and a total of 4GB including 3.5GB shared.

[JammyB]

I'm new to this one. where's your dedicated RAM set? and where is the shared RAM set? I've only seen one setting in my northbridge settings in the Bios, it goes up to 2Gig

[Rove]

Ok IDK I assume we have different motherboards. Use DXDiag to check shared versus dedicated. I just used default settings.

[_I_]

the a10 has no 'dedicated ram' its all shared
but it can allocate 512m to 4g