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AMD Kaveri A10-7850K Overclock Guide - Page 46

post #451 of 1332
CPU - 4200, Memory - 2400 (10-12-12-31), NB - 2000, GPU - 960.
I wonder, what i will get with CPU more than 4200, and GPU around 1000 - 1100.


Edited by MartinSkyfall - 3/18/14 at 4:23pm
post #452 of 1332
Quote:
Originally Posted by NonToxic628 View Post

Hey guys,

I'm having a slight issue with my new build. For one reason or another, I cannot get the 7850 to clock higher than the idle speeds of 1.7ghz. This is regardless of what settings I use on my motherboard. I did have the cpu overclocked to 4.2ghz yesterday and everything was fine. I however decided to go back to default settings as I wanted to run some benchmarks to see how great of an improvement I was truly seeing.

I'm using the MSI A88x-G45 Gaming board along with some Kingston Hyper X Beast sticks that are currently running at 2400mhz with the xmp profile.

I have tried disabling some things like quiet and cool but that hasn't helped me at all.

I'm hoping someone has some thoughts on what I may need to do here.




Thanks

Check here: http://www.overclock.net/t/1474753/official-kaveri-overclock-guide-in-progress/0_50
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post #453 of 1332
Hi all,

When seeing the voltages presented in this thread I somehow start wondering about what my computer displays.
For example my BIOS says that default CPU voltage is 1.45v and my monitoring tools (I installes AMD OD, CPUz and Sandra) tell me that my default NB voltage is 1.3v - all of this at stock settings.

(By the way my system is an A10-7850k on an ASRock fm2a88x-itx+ board)

In my opinion the voltages are rather high and I wonder if that realy can be stock voltages. On the other hand I failed to raise the iGPU Clock beyond 720 mhz without increasing the NB voltage. Raising it by 0.018v was enough to get it stable at 800 mhz, but now I am close to 1.32v on my NB - that seems pretty much.

I am not so experienced at OC, so my question is: Is it possible that certain boards tell me I have a higher CPU / NB voltage than another board would do at stock? So does stock voltage massively depends on what is given on the board and can I assume that +0.02v Nb or even +0.05v is save? My CPU seems to behave normal to the "+Xv " terms, but it shows pretty high voltages in absolute values.

By the way: is there any reliant way of temperature measurement? Every tool tells me something different and I don't know what to believe. Bios says I am about 45°C when I fix my clock so it can not down-clock any more (Cooler Master all in one water cooler with 120mm fan) - that seems fine for me so far.

Thanks for your help

Edit: I wanted to add: Has anyone an advice on how to became 2400mhz ram stable? I have Kingston HyperX Beasts here, specified to DDR3-2400 @ 1.65v, but currently I have difficulties getting them stable. There was a voltage bug in the 2133mhz preset to (my board made it running 1.5v instead of specified 1.65v), but since I changed that manually 2133 is pretty rock-stable (3dMark, Furmark, 3hours of continuous playing Anno 2070)...
Edited by Lolliedieb - 3/20/14 at 5:40am
post #454 of 1332
Hello, OCN!

I'm new member to the board, but been lurking since forever. My hello thread here - http://www.overclock.net/t/1475843/hello-from-some-old-bones

So I got this new AMD fancy stuff, lol. Info in the sig. Not even bothered to put more than one fan on the MCR320. Temps are fine, if not great - 33/46 idle/load for hours @ stock.
What I managed till now:
CPU - later
NB 2000MHz @ 1.275 (default?)
Ram - boots @ 2400 10-12-12-31-1T, not stable test 8 of Memtest86
iGPU - 1028MHz on stock volts from bios - stable Vantage, Furmark, Assassin's creed (lol?)

So here come the questions as I am a bit rusty on the last 5 years of AMD:
Can the ram/imc do @ CR1 2400+MHz at all? ver.3.24
Also which slots are best for overclock? Should be A1-B1, but manual is contradictory.

As the SB and the mosfets get hell-hot - should I put them under water too, or is a 120mm fan blowing at them @ 1000rpm doing fine?
What is the rated 7700K voltage? 1.325? 1.350? Asrock cannot decide on that.

EDIT: So I decided to move the memory on A2-B2 -booted @2400 with XMP timings and stock 1.675V. I am now stable 3D (Vantage, Fur), memtest86, HCI, 32M. biggrin.gif Anything lower than 1.675 is stable everywhere, except for 3D.

Really strange how memtest86 4 full passes, prime95 for an hour, and 32M are stable, but not 3D.Any thoughts on that, mates?
Edited by Abyssmal - 3/21/14 at 10:43pm
post #455 of 1332
Quote:
Originally Posted by Lolliedieb View Post

Edit: I wanted to add: Has anyone an advice on how to became 2400mhz ram stable? I have Kingston HyperX Beasts here, specified to DDR3-2400 @ 1.65v, but currently I have difficulties getting them stable. There was a voltage bug in the 2133mhz preset to (my board made it running 1.5v instead of specified 1.65v), but since I changed that manually 2133 is pretty rock-stable (3dMark, Furmark, 3hours of continuous playing Anno 2070)...

Hello!

After quite some time spent testing (and reading through all posts in this thread, which isn't easy due to lots of pointless arguing), I managed to run 2400mhz ram stable by increasing DRAM voltage, otherwise I ended at 2133 with quite loose timings. I use Kingston PredatorX 2666mhz CL11 2x4GB, which are Hynix chips, just like your Beasts I believe and Hynix on AMD is known to require a little bit more love. However I only loaded XMP profile #2, which is 2400mhz 11-13-13-30 1T but at 1.695V ~1.7V. It appears stable after 1hour full strestest in AIDA64. Anything lower than 1.695V won't work longer than 15minutes. Ofcourse I haven't touched profile #1 at all...

About stock VID, I believe NB is at 1.275V on my MB (ASRock FM2A88X+ Killer with 1.70 BIOS) which seems quite high to me. Whatever the reason, I wouldn't go past 1.325V ~ 1.35 ever as I wouldn't go past 1.45V on 28nm CPU. People claim there are walls at 1.4V for NB and 1.55V for CPU, but that's just too much imo! Also minimal NB frequency for 2400mhz RAM is 1500mhz, so stock 1800mhz is aplenty. I run it at 2000mhz and 1.2875V atm, but no idea how it will behave after I start upping iGPU frequencies from stock.

Edit: It appears that stock VID on cpu is 1.325V for 3.7~4.0ghz, but only 1.25V on NB. Be careful with it since we cannot get actual reading of NB voltage and also take into consideration LLC (ASRock has reversed % on LLC it seems, extreme setting is 0% actually, while 100% is standard/auto).


On a side note, my 7850k throttles under iGPU load, just like others have reported (and there is nothing so far that worked for me to avoid it - sometimes it jumps to full speed for few seconds, but thats it). For gaming without dGPU, I would leave CPU side stock since it will throttle anyway, and just bump up RAM, iGPU and litte bit NB frequency to 2000mhz as a last touch.

Edit: About temps, I use ASRock utility F-stream for basic readings, Aida64 and AMD Overdrive for more detailed info. Also note, that ASRock bios puts your system under decent load, so temp there should be considered as temp under load.

Hope it helps you get your Beasts working at 2400!


Just in case for the reference: AMD A10-7850k, ASRock FM2A88X+ Killer, Kingston PredatorX 2666mhz CL11 2x4GB, Kingston V300 SSD 240GB, FSP Raider 650W 80+silver PSU active, CM N400 case with 3x120mm fans and CM Seidon 120V +1pull fan).
Edited by Spectrum Legacy - 3/22/14 at 4:49pm
post #456 of 1332
My cs11 2400 radeon memory works great at 2400 with the amp profile and NB at 2000.
post #457 of 1332
Quote:
Originally Posted by Spectrum Legacy View Post

Hello!



On a side note, my 7850k throttles under iGPU load, just like others have reported (and there is nothing so far that worked for me to avoid it - sometimes it jumps to full speed for few seconds, but thats it). For gaming without dGPU, I would leave CPU side stock since it will throttle anyway, and just bump up RAM, iGPU and litte bit NB frequency to 2000mhz as a last touch.

Hope it helps you get your Beasts working at 2400!


Just in case for the reference: AMD A10-7850k, ASRock FM2A88X+ Killer, Kingston PredatorX 2666mhz CL11 2x4GB, Kingston V300 SSD 240GB, FSP Raider 650W 80+silver PSU active, CM N400 case with 3x120mm fans and CM Seidon 120V +1pull fan).

You can't avoid throttling under load. It is either a cpu design or mandated by AMD in their bios that manufacturers build around. I mentioned this issue to the head of Global marketing of AMD and asked for it to bea choice in bios NOT forced. He said he would pass it on to the design team. So if lucky we may have a bios option ina few months permitting us to avoid the throttling , which is simply a power saving mode that AMD intended for mobile devices and should NOT have forced on desktop users.
post #458 of 1332
After my earlier post with two sticks http://www.overclock.net/t/1460028/amd-kaveri-a10-7850k-overclock-guide/440#post_21957956, I decided to do the same thing with four sticks.
Notes that are the same as with the previous testing: Warning: Spoiler! (Click to show)
Here are my settings with two sticks of 2400MHz 8GB Team Xtreem on an Extreme6+ with a 7850K, stock heatsink, and a XL R2 case (I left the side cover off for testing since I wanted to be able to see the error codes). Keep in mind that none of this is under load--it's idle in the UEFI, without an OS installed. It more accurately represents the maximum the parts can achieve with stock settings. I haven't gotten to OC'ing my GPU, so that's going to affect thermals too.
ASRock UEFI settings (read from top to bottom matching the format of the UEFI):
CPU OC Mode
4400MHz
Manual
101
Disabled
Disabled
Manual
44 (Returned after leaving the system at the UEFI to find it locked up with Dr. Debug error code 0d, so I lowered it to 44.)
Internal
1.45V
0V
x10
1.2875V (got a screen flicker on transition into the UEFI at 1.275V, and after another 0d, this was one of the settings I brought back up.)
Auto
Auto
XMP 1.3 Profile 1
DDR3-1866 (50'd on previous settings copied from post #447 on 2400 and 2133; 4F'd on 1903 and 1884; the DDR3 can be indirectly set higher than 2400MHz by raising the APU/PCIE Frequency)
1.66V (I don't see any reason to go lower. That's its factory rating--if it dies, it won't be because of the voltage. Update 3: after I came back to a 0d, this was one of the settings I put back to its higher setting for stability.)
5 (ASRock's minimum setting) 8 (C7'd at 7) 9 (C7'd at 8; tried it with 31 tRAS and 43 tRC and got the same result) 8 (4F'd at 7) 15 (ASRock's minimum setting) 2T (34'd at 1T) 25 (4F'd at 24; also stable when lowered along with tRAS to 26 (RAS to CAS Delay) + (RAS Cycle Time) + (2 clock cycles))) 5 (ASRock's minimum setting) 300ns (C7'd at 160ns; The Extreme6+ doesn't allow settings other than the pre-defined increments) 4 (Again, ASrock limitation; it cannot be set lower than 4) 5 (06'd at 4) 4 (the Extreme6+ doesn't allow settings lower than 4) 12 (ASRock's minimum setting)
Temperatures average CPU 63C and M/B 34C.

Here are my system specifications. Note that Sheet 2 is the relevant page.
https://docs.google.com/spreadsheet/ccc?key=0ApzIz1YSh_e7dEZYb3RORFZxU21jUDh0MWRRSkhhcUE&usp=sharing
Edited by joeybuddy96 - 3/22/14 at 8:59pm
post #459 of 1332
Quote:
Originally Posted by Abyssmal View Post

As the SB and the mosfets get hell-hot - should I put them under water too, or is a 120mm fan blowing at them @ 1000rpm doing fine?
Any thoughts on that? The sb is cold with the 120mm fan, but mosfets still get quite hot.

What I got till now:
iGPU 1028MHz, stock volts from bios - stable on anything I tested
NB 2000MHz, voltage 1.28125V (+1 step)
RAM 2400MHz, 1.670V (memtest86 2-pass stable)
APU PCIE voltage 1.068V (+1)

Ram is rock stable memtest, Linx 10 times, OCCT, IBT, 32M, HCI, aida stress, prime95 on anything 1.655V and more with xmp timings.
BUT crashes 3D (furmark) within minutes on iGPU with anything lower than 1.670V.
Here's 32M without the +1 on nb and pcie volts


Also furmark needs +1 on nb volts and +1 on apu pcie volts. Is this normal? Still under test.
I've read that apu pcie vddp is also for imc - thus the combined stress of iGPU pcie and ram under 3D is too much for the stock voltage? I am on the right path?

Memtest86 stable with settings everything stock only RAM 2133->2400, 1.670V; XMP timings, except tRFC 350->300; ; NB 1.28125V, PCIe VDDP 1.068V Will test 3D on these settings today.




So, my observations:
NB 2000MHz gives aida read/write a boost even on 2133 memory; iGPU doesn't care a bit
iGPU benefits a lot from 2133->2400 ram - Vantage P8833/8455/10201 ---> P9127/8805/10252 That's about 3-4 fps (10%) more.
Massive vdroop
Some crazy play with volages to get 3D stable biggrin.gif


Question - LLC does not seem to work at all on any setting? Constant droop of 0.025V+ (stock 1.325->1.294). Help?
post #460 of 1332
I just updated the ASRock F-stream utility to the latest beta version and it seems to finally show correct values this time (there was bug with iGPU frequency being incorrect and also APU PCIE VDDP votlage was indicated as slightly above 1.2V despite my lower setting in bios).

APU PCIE VDDP is really new value for me. Is it possible that my issues with 2400mhz ram (especially when trying to increase iGPU frequency) might be because of that low setting? If it really handles IMC, it could perhaps help to stabilize things. I've read somewhere that on Richlands the high values were past 1.3V for VDDP, so in comparison the auto/default value of 1.052V seems too low. I'm just curious how too high or too low voltage affects the whole thing.

Any advice about VDDP voltage and what are the safe values for it or how to utilize it for the greater good would be appreciated. Thanks!


So far non the wiser: 3.7Ghz at 1.325V, NB 2ghz at 1.3V (feels like VRMs are colder compared to 1.2875V), iGPU at 720mhz stock, LLC both on auto, 2400mhz at 1.70V (sticks are cold, but VRMs were not! - had to place stock fan from kaveri under VRM to blow air at it, but at 3600rpm the thing howls quite some). Stable temps during full AIDA stressings were 38°C on cpu and 28°C on MB (though thermometer is far from mosfets I believe so it doesn't matter much). memtest86 2passes also ok
Edited by Spectrum Legacy - 3/23/14 at 8:20pm
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