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AMD Kaveri A10-7850K Overclock Guide - Page 94

post #931 of 1332
Arcneis you should run memtest86. As drmrlordx mentioned concentrate on the 2 tests. Iirc it was test 7 and test 8 for me that gave me problems. It takes less than 10 mins per pass. Without confirming with memtest86 you can never rule out ram.
post #932 of 1332
Quote:
Originally Posted by Themisseble View Post

Look at Athlon x4 5350 .. look at puma+ .... look at FX 4300... Clock per clock - FPU - is the same performance. 4.5W TDP vs 25W TDP vs 95 W TDP. Go MMO like GW2/planet side puts shadows on... you will see how much better can INTEl Cpu handle it once you put off shadows AMD gets really good. AMD has smaller cores ... based on integer performance... FPU is way behind intel. Once you use integer performance and lightly FPu like power ray.. oced TAhlon x4 860K may beat and or mach stock i5. But when you put heavy FPu rendering (which is better to render with GPU) amd just sucks.

AMD "tough" that FPU rendering (CPU) is better to offload on GPU which is much more powerfull (physX NVIDIA, tress FX 3.0 AMD, havok) ... Basically there is no improvement on FPU for like 7 years from AMD.

Many people will say that amd has bad IPC ... but is not exactly true. Yes IPC is worse but... not by that much. Mostly problems is FPU 2x 128Bit per module - can this FPu compare to single intels 256 bit... yes it can but it is not much faster. I would really want to see same CPU with 2x better FPU.

http://blackholetec.com/main/article/amd-a10-7850k-kaveri-review-page-7 here is good review.. you will see povray and CB difference when OC-ed

Thank you for your excellent insights regarding fpus and gaming physics. I never knew fpus are used in 3d physics.
Compared with Intel cpus Amd ones are indeed weaker in cpu based physics. The firestrike physics test does exactly this-force cpu to perform the physics rendering. If the a10 and the 4 year old i5 2400 score similar fps in this test, it should mean our a10's cpu based fpu performance is atleast on par with that of those older i5s. I am not going to pit my cpu against the latest i5 4670. It is mauling. They churn out more than twice the fps I get in this test.
Now according to futuremark the combined test (test 3) stresses the gpu graphics and the cpu physics at the same time. In comparison to the older i5,although my a10 scored better on the graphics only test (the test 1) and scored on-par in the cpu only fpu based test (the test 2) why would it score so much lower than the 4 year old i5 2400 in the combined test (the test 3)? Logically, I am guessing there must be some other component/technology in Intel (on even the older cpus) that enables their cpus to push the graphics card hard while at the same time use their cpu based fpus to the max. This particular aspect is falls sgort even in the more modern a10s. Correct me if I am wrong, it seems to me that a10s have caught up with the sandy bridges in the cpu based fpu calculation side, is beating them w.r.t pushing graphics card but still loses out when it comes to multitasking both these jobs at the same time.
Since amds seems to so obviously lag in such forced multitasking scenarios, I hope in real games the amd drivers take over and have the gpu perform the physics as well. If that is not the case I guess disabling or even reducing all those graphic elements that rely on the fpus on cpu die, should help the cpu focus on purely pushing the graphics card (which it is very good at) and not bottleneck it instead. How do I identify such graphic elements? You mentioned shadows. What other items should I look for? Finally,if games use opencl2.0 or even opencl would amd cpus not bottleneck the graphics cards as much as it does with this particular firestrike combined test? Sorry if I seem misinformed. It is exciting but I am totally new to all this.
post #933 of 1332
Quote:
Originally Posted by SuperHiro View Post

I just want to add this to the mixing pot thread of Kaveri overclocks. This is the highest, stable, geekbench score I achieved. http://browser.primatelabs.com/geekbench3/1469603

This is on an MSI A88XM Gaming v1.3 bios, A10-7850K revision KV-A1 (bought it Jan as soon as it released) clocked to 4.4ghz with voltage set to auto on an H80i, NB @ 2000mhz +0.2V, Mushkin Enhanced Blackline Ridgeback 2133 @ 10-12-12-28-40, PowerColor TurboDuo R9 270 @ 1050/1455.

Unigine Valley score of 1648 in Extreme mode.

Edit: I lied, I managed to squeeze out more juice from the orange peels by changing the ram clocks to 1833 @ 9-11-11-25-35
http://browser.primatelabs.com/geekbench3/1473861

I'm going to play with reducing the timings further at 1833 since 1833 has been more stable than 2133 on the MSI A88XM Gaming

What I don't understand is why would I achieve a higher benchmark with slower ram?


Hi, I also have the A88XM Gaming and a Kaveri, and would like to start overclocking it too. I currently use the automated AMP profile to run the 1866 Ram at 2133, and the OC Genie feature to run the CPU at 4.2 Ghz (Gear 1). I tried Gear 2 (4.5) but it was not really stable ( crashed sometimes at idle). It is completely stable at 4.2 with OC Genie and AMP enabled.

I would like to do better than 4.2 (water cooled with great temps) but I am a total noob in OC.

In the end... could I ask you what you modified in the BIOS ? Just as an indication ? I tried to read about OC but it offen differs from the A88XM Gaming and so it's hard to know where to actually start.

Thanks in advance any tip would be greatly appreciate smile.gif !

EDIT : I am actually playing around with the settings you have mentionned, seems to work pretty nicely, better than with OC Genie for sure smile.gif


EDIT 2 : http://browser.primatelabs.com/geekbench3/1672586
It doesn't seem to record the frequency of the CPU properly (3.8 instead of 4.5) but the result is good, so ..
Pretty stable so far, 4.5 / +0.07 NB 2000Mhz/+0.07 with AMP enable 2133Mhz 11-11-11-30 1.65v
Edited by Turban - 1/9/15 at 10:10am
post #934 of 1332
Quote:
Originally Posted by Turban View Post

Hi, I also have the A88XM Gaming and a Kaveri, and would like to start overclocking it too. I currently use the automated AMP profile to run the 1866 Ram at 2133, and the OC Genie feature to run the CPU at 4.2 Ghz (Gear 1). I tried Gear 2 (4.5) but it was not really stable ( crashed sometimes at idle). It is completely stable at 4.2 with OC Genie and AMP enabled.

I would like to do better than 4.2 (water cooled with great temps) but I am a total noob in OC.

In the end... could I ask you what you modified in the BIOS ? Just as an indication ? I tried to read about OC but it offen differs from the A88XM Gaming and so it's hard to know where to actually start.

Thanks in advance any tip would be greatly appreciate smile.gif !

EDIT : I am actually playing around with the settings you have mentionned, seems to work pretty nicely, better than with OC Genie for sure smile.gif


EDIT 2 : http://browser.primatelabs.com/geekbench3/1672586
It doesn't seem to record the frequency of the CPU properly (3.8 instead of 4.5) but the result is good, so ..
Pretty stable so far, 4.5 / +0.07 NB 2000Mhz/+0.07 with AMP enable 2133Mhz 11-11-11-30 1.65v

Very nice. I've done some more tweaking and realized you don't need to push that much voltage to achieve those overclocks so you can reduce a good amount of heat. Right now, I have my settings at 4.5 / +0.02, NB 2000mhz / +0.02 and it's stable with less heat. I also have the same problem with geekbench thinking it's clocked at 3.8 but that doesn't bother me. Other than lowering the voltages, that's all the tips I can give in the oc section so far. I'm still trying to push to 4.6 but I can't manage to get it stable without the voltages being dangerously high. If I happen to figure it out, I'll be back on here.

http://browser.primatelabs.com/geekbench3/1673650

Another benchmark after I finally managed to get my ram to stabley run it's advertised speed.

Edit: Regarding other bios settings, it's pretty standard. Disable turbo, which will automatically disable amd cool & quiet, and disable p-state limit, which is on the bottom of the oc section of the bios and prevents the cpu from keeping it within it's designed TDP range AFAIK.
Edited by SuperHiro - 1/9/15 at 1:49pm
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post #935 of 1332
That's funny because I actually raised the voltage to +0.08v as in your post as my PC crashed twice while playing (only playing, nothing for hours before) at +0.07v. After getting +0.08v it didn't crashed (so far).

But : I was playing Star Citizen (early alpha) so ... maybe the crash comes from that. I will definitely try to go down to +0.02v to save some heat , and see how that works !
Then I'll try to learn about what I can do with my RAm, because you seem to have some really nice numbers with your ! smile.gif

But anyway, thanks for sharing your results that helped me a lot to get to 4.5 without OC genie smile.gif

Cheers smile.gif
post #936 of 1332
Glad to help in any limited way I can. Still pretty new to this but I been playing with the kaveri for almost a year now and from my experience between three FM2+ boards this MSI seems to be the most 'random.' If you make any progress further ocing on this board, I'd be glad to hear about it to match your results biggrin.gif

My ram btw is XMP 1.3 - 2133 - 10-12-12-28-40 @ 1.65v if that gives you anything to work with for your ram.
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post #937 of 1332
Well , not sure I'll ever provide something worth matching biggrin.gif

So far it's only absolutely stable at +0.08v/+0.08v , it's easier to lower the NB voltage but eventually it crashes anyway (crashes pretty fast at +0.02v)
I guess it's time to try to read a bit about what's what biggrin.gif

But enought for tonight smile.gif

Cheers thumb.gif
post #938 of 1332
I have raised the mem to 2400Mhz , so my score got better especially multi-core (mc was bad before) , but you are still having a better memory score so I need to check that out.
Memory frequency really seems to play a part in multi-core performance. I'm just a noob, so it's nice to discover stuff.

Oh yes and the CPU is at 4.67 both times tongue.gif

RAM dropped at 1886 http://browser.primatelabs.com/geekbench3/1680392

RAM at 2392 http://browser.primatelabs.com/geekbench3/1680440

Now I need to run 3D Mark .. I think I'm actually having fun today smile.gif

EDIT : Didn't pass 3D mark :/ But I'll keep working on it, I'm feeling lucky biggrin.gif

EDIT 2 : So, I tweaked some more and this time I passed Geekbench and 3D mark and passed the 10000 mark so that's cool

http://browser.primatelabs.com/geekbench3/1680783

http://www.3dmark.com/3dm11/9265299

Stable so far, but probably not on the long run, and probably needs tweaking, I'm just having fun right now smile.gif

Cheers
Edited by Turban - 1/10/15 at 2:14pm
post #939 of 1332
What do you guys use to monitor your temps ?

I use AMD Overdrive > Thermal margin

HWiNFO + MSI Command Center for MB + CPU temps.

Problem when I have a 10°C variation on both HWi and MSI CC, AMD Overdrive shows a 50°C variation of the thermal margin !!

So I don't know which to trust...


Also MSI CC ****ed it up at some point and turned my fans down ( Something happened, maybe it wasn't CC, but the fans were showing as much lower than usually, and much lower than what's in the BIOS), so no idea where those new settings were coming from)

At first I heard a "click" in my case, found that weird, and checked MSI CC... the temp was 81° !! Only f**** !!

Turned the fans/pump back up and within 10 sec it was back at 35°, with a lot of heat coming out of the case/rad... crazy .. I'll be carefull now, and leave the fans on a higher profile, just to know if they're on/off... before that they were low enought to keep the thing cool, but still be silent...
Now I want to hear them at all time just to be sure...

Anyway... just sharing my little noob experiences... tell me if I'm off topic.

I will come up with results hopefully soon , so far I am "successful enough" not to give up tongue.gif

Cheers thumb.gif
post #940 of 1332
I use amd overdrive to monitor cpu thermal margin and asrock utility tool for mobo temps. Cpu temp reported by tools other than amd overdrive are not accurate. After reading your post I am not sure if my h80i throttles up and down as per the actual cpu temperature control requirement. I have noticed it running at different speeds but should closely monitor here on and maybe create a custom profile.
BTW, At what temps is your cpu running with 4.67.
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