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Quick Question: Is it worth the $60 to upgrade to a HD6670 for crossfire?

  • Yes

    Votes: 5 50.0%
  • No

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  • Only for benchmarking

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Discussion Starter · #1 ·
Specs;
Windows 8 64-Bit
AMD A10-5800k w/ 7660D @ 3.8GHz OC => 4.4GHz
MSI FM2-A75MA-E35 mATX => Bios v1.5 (Latest Bios v.)
Raidmax RX-530SS (530w)
Crucial Ballistix Elite (4gb 2x2gb @ 1866MHz CL9)
WD VelociRaptor 250GB HDD
Sentey Eagle Plus Extreme Division midTower

Well first off, Hello Overclockers. This is my first post in this forum, as well as a first time overclocker.
My problem is as follows;

My PC runs fine playing, say Far Cry 3 in 720p medium settings. Without over clocking i can still achieve around 25-36fps. Which isn't bad, but of course we always want more!

So this is where the overclocking comes in. I load up my BIOS - UEFI, and activate OC Genie II. Loads fine, temps running beautifully, getting a max of 4400MHz. So i begin to load up Far Cry 3 and it runs fine, I can get about 10fps boost with the OC, but then after about 10 minutes or less of gameplay my PC resets. So, first thing i do is turn off the OC, and do some research. I got prime95 (Blend on v2.7.9 build 1 (64bit)), and ran it 3.5 hours with max cpu temps of 65c and 55c on the individual cores (This is using MSI's Control Center and AMD Overdrive). I know, i need to run it for 12+ hours yadadada, but I was just looking for a crash. Not 24-hour game session stability. Also, my memory cant reach its desired frequency (933MHz x 2) without a CPU base frequency change from 100 to 105, which requires using OC genie, since it doesnt allow me the option to change it in the bios. (Well, the options there, but it just shows 100, nothing higher or lower.) XMP tries to OC but the bios just smacks it right back down.
frown.gif


So, as of that, I've ruled out the CPU/Heat instability. Now leaves memory, which when overclocked runs at 1983MHz 9-9-27 2T, and the iGPU runs at 840MHz. When I downloaded 3DMark 11, it freezes some time in until I do a cold restart. I have not changed the voltages of anything, left them all at auto. I did go ahead and disable cool'n'quiet, and the other two options for power saving.
These are all set to auto/not running oc:
CPU: 1.4125v
CPU-NB: 1.14v
DRAM: 1.5v
NB: 1.2v

Another thing, in my MSI Control Center says my 12v rail, i believe that's what its referring to, is 12.3v. Within' the 5% mark, so all is good there I hope.

Would appreciate some feedback, on possible issues that I haven't seen, or addressed. All opinions welcome.

p.s. Let me know if you want screenshots of the auto OC settings, ect.
 

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Could be simply u re iGPU.So basically u re cpu is ok and ram ok. That makes u pass prime95. Though prime95 isnt perfect for RAM testing u should use memtest but still it does test RAM too so i d assume its iGPU.

Give more detail info of u re OCed pc please.
CPU-z cpu tab and memory tab
GPU-z

Is it stock cooler? If not which cooler do u use.

Also 1 more thing to notice. Its fairly simple and obvious and i expirienced it. HEAT. Yes u re APU limit is 73 and u re temps are 65 under load of prime. However since u got IGPU and during prime it isnt runing u re not stressing u re CPU fully.

My expirience is that runing 3dmark(1 test, loop) with prime95 adds 7 degrees more in lesss than 10 mins.

Also u could run few passes of memtest to rule out memory instability.

Anyways more info is needed.CPU-z, GPU-z. Do u use stock cooler etc.
Im sure others looking atu re problem will benifit from extra info while trying to help.
 

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Discussion Starter · #3 ·
Im having another issue now. I cannot connect to my monitor using VGA while overclocked, HDMI works fine. As soon as I reset the bios setting the VGA works again, no problems. My monitor tells me that the format is not supported. Though the format isnt being changed?

I will post the the overclock pictures in my next reply; just have to get an HDMI cord and re-do the overclock.
 

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Thats normal im afraid when ocing u re bus speed.
I think it starts to happen at 108 or so. Or was it just before 120. Cant remember. It is well known issue no fix other than oc by using multi and ofc hdmi/dvi solution. Only analog old vga out is affected.

Edit: ofc getting 6670 and connecting monitor into it will also solve that particular problem ( losing video signal when raising bus speed )
 

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Discussion Starter · #5 ·
I'm only bumping it up to 105? All I know is that this HDMI connection looks rather shi***.
mad.gif

I am using the stock fan, and I was about to post this an hour ago, but my computer crashed running nothing but chrome. CPU isn't even technically overclocked, and AMD overdrive isn't reading the GPU overclock so I don't even think that's the problem if its still running at its stock 800MHz. Then this does all lead to memory if that's correct, or maybe even a mobo issue, not sure. Here is the image.



I have yet to run memtest due to my PC crashing while looking for it. Downloading now though.
 

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Discussion Starter · #6 ·
I cant really see the image on the forum, could be my shi*** HDMI connection. Let me know if they're to small/blurry and ill take individual/larger screens.
 

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Pitcures are perfectly clear.

I saw u write that your memory cant run its desired freq.
Quote:
Originally Posted by Skyroor View Post

Specs;

Crucial Ballistix Elite (4gb 2x2gb @ 1866MHz CL9)
..........
Also, my memory cant reach its desired frequency (933MHz x 2) without a CPU base frequency change from 100 to 105, which requires using OC genie, since it doesnt allow me the option to change it in the bios. (Well, the options there, but it just shows 100, nothing higher or lower.) XMP tries to OC but the bios just smacks it right back down.
frown.gif


So, as of that, I've ruled out the CPU/Heat instability. Now leaves memory, which when overclocked runs at 1983MHz 9-9-27 2T,
CPU: 1.4125v
CPU-NB: 1.14v
DRAM: 1.5v
NB: 1.2v
Could u do simple thing just runing u re memory at 1600? If evey problem u got goes away its memory.

U can also download memtest
http://www.memtest.org/

scroll down that page
pick either iso and burn it on cd or even easier usb version.

* Memtest86+ V4.10 (04/05/2010) *

Download - Pre-Compiled Bootable ISO (.gz)
Download - Pre-Compiled Bootable ISO (.zip)
www.memtest.org/download/4.10/memtest86+-4.10.iso.zip
Download - Auto-installer for USB Key (Win 9x/2k/xp/7)
www.memtest.org/download/4.10/memtest86+-4.10.usb.installer.zip

EDIT: i really think u should try going 1600 first to rule out memory or focus on it. Truth is that ppl got memory working on 2133 and even more but also alot report that they cant get it working at 1866.
Could be that it justneed a bit of cpu/nb voltage but first i would go with 1600 memory multiplier and rund 3dmark and games to see if it crashes. If it does its something else not memory and u dont have to run memtest for hours.
 

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Discussion Starter · #8 ·
Alright, well my OC will have to run it at 1639, or something close to that because of OC genie. Which they really need to update. It seems like all you can do is do an automatic oc or half ass it manually. I have memtest now and booted it from my flash drive and it ran fine. I only ran it for a minute though. The weird thing I saw is that it was reading memory as 800MHz 1-3-3-3 / DDR2?

 

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It needs ro run longer though few hours atleast to make several passes. Dont worry about it not reading u re memory its main job is to fill u re memory with data then get it back and compare if memory returned correct data. It probably doesnt recognize new APUs well but dont worry it can still use memory, test it and report errors.

From what u wrote it seems u switched to 1600 well as close as u could. U said your 3dmark would normally freeze if u run it. Does it still happen now at 1600ish ?

EDIT: so see if u can run 3dmark and far cry 3 and post back result. Keep the oc everything same just lower ram from 1866 to 1600.
 

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Discussion Starter · #10 ·
Okay, im about to go to the store right now, so I think im gonna turn on memtest and let it run for a good hour at least. Then ill post the results here, along with the results from another 3DMark test.
thumb.gif
 

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Quote:
Originally Posted by Skyroor View Post

Specs;
................. I can get about 10fps boost with the OC, but then after about 10 minutes or less of gameplay my PC resets. So, first thing i do is turn off the OC, and do some research. I got prime95 (Blend on v2.7.9 build 1 (64bit)), and ran it 3.5 hours with max cpu temps of 65c and 55c on the individual cores
So u say u turned of OC? and ran prime95. Does that mean u ran prime on stock clock and not on OCed settings. Just thinking stock heatsink, stock voltage and 4.4GHz that seems 2good to be true as ppl usually touch 1.5v for about 4.5 4.6 and 4.7
It just got me thinking maybe it is CPU?
Well got to wait for u re update howdid tests go with ram at 1600? Ofc everything else should be oced as u stated before 4.4GHz cpu 840 iGPU.

2 more things to notice.
1 oc genie i think u should stick to manual OC in bios
2 turbo core(turbo boost) in bios should be disabled (it is the thing that clocks u re cpu to 4.2 from default 3.8)

Edit:
these turbo setting options
AMD Turbo Core Technology

Adjust Max Turbo Core Ratio

Adjust Turbo Core Ratio

does u re uefi bios look like this?
u should try using OC tab on left and input u re setting there. Unless it isnt working for some reason.


EDIT2: Btw give link to u re 3dmark result or post SS of score with total score, graphics and cpu score visible.
 

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Discussion Starter · #12 ·

Test went perfect; at another 42% pass with no issues.

No I turned it off, while I was researching but of course turned it back on for prime95. Also, I believe the the voltage should only go up to 1.475 max or something like that. Recently since I didn't really see the need to oc the cpu, mainly just want oc memory and iGPU.

My setting more in depth are this;
105x38 - 3990MHz
Turbo Core/which ill disable now - 105x40 - 4200MHz (max) and 105x38 - 3990MHz (min)
This is still crashing. And technically no overclocking; actually more under clocking.

I would go all manual if I could; no doubt. But the bios doesn't allow me to change the cpu base frequency, the only option is 100. Or 105 with oc genie. I can do it with control center; but it only stays till I reboot. Also, I believe that I can't overclock the memory without the 105 base frequency increase; then I can't use VGA. This whole thing is just a mess..
 

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Indeed it isnt overclocking at all. As it turbos at 4.2 at stock.

About that 100 only option "Adjust CPU FSB Frequency" it shows 100 and no other options? could it be u need to press "plus" or "minus" sign on keyboard? or maybe "page up" and "page down" ?
Maybe just click on it and punch in number?
Also try not to run ati overdrive lots of ppl dont like it and sauy it can cause trouble. Just the less things we have tothink about the better.

Also when u say not stable does that mean at those settings
105x38 - 3990MHz
1639MHz memory
stock voltage
It crashed 3d mark and the far cry 3?
That is actually good news seems u re ram wasnt causing u issues.
 

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Discussion Starter · #14 ·
No I still need to run 3DMark with the new memory changes. That's my next task.

I hear using overdrive is the only way for some people to successfully overclock their iGpu. Even when I use it, it doesn't read that I overclocked the iGPU to 840, it remains at 800, or lower depending on the load. For now though I won't use it though. Until we find the culprit.

Also in those images, look at the temp differences between MSI control center (using a msi board) and hwmonitor. I'm having a hard time finding out whats accurate. If hwmonitor is the accurate one this whole issue is heat.
 

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Discussion Starter · #15 ·
Awesome, the + key works! Now I can stop using OC genie!
smile.gif


EDIT: Nope, the 105 doesn't stay on save and exit. So that was useless.
frown.gif
 

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Wierd. I hope someone else joins the topic. I am clueless as to why bios wont keep/save settings.

I would suggest bios reset and starting from scratch again.
Disabling turbo core and cpu power saving options. After that try ocing CPU by cpu multi(not through oc gennie but rather manual oc "adjust cpu ratio"), allso try getting ram as high as posible if not working at 1866 u might wanna up cpu-NB voltage just a bit. Last play with multi for iGPU. Make sure u test stability and performance(like for iGPU multi to see if u gain anything from changing it).

Good luck.
 

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Discussion Starter · #17 ·
Well, I can overclock the cpu just fine. No issues there, maybe other than heat. I emailed MSI and they told me that the control center should be more accurate than any other program regarding temps as it is a direct bios read. Also, I can't overclock the memory without a fbs oc/technically using oc genie. Then the iGPU can only be oc'ed using overdrive it seems, even though bios says its overclocked, nothing reads it as overclocked.

Tomorrow, ill start messing with the iGPU though. Manually start at 840, then up to 1080 is where I saw it was best fit. Let you know, FPS results from the two. iGPU needs what voltage increase? NB or CPU?
 

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If you are overclocking by changing the FSB, then try to make your memory run as close to stock speeds as possible to minimize problems. Multiple websites that compared different DDR3 and even DDR2 rams, and found no significant advantage of having higher speeds. There are also very slight differences between DDR2 and DDR3 except DDR3 uses less power and have more bandwidth I believe.

Here is the best article I found that addresses this issue: http://www.anandtech.com/show/2232/7

And adding a 6670 is not worth it IMO, unless you meant 6670X2.
I'm pretty sure the 6670 is on the same level as your iGPU, and CFing them might cause shuddering. Of course I heard that from the laptop A10 reviews when Trinity was first released, and AMD probably have better driver for them now.

Becareful when overclocking your iGPU though, since it shares power with your CPU. If you want to see major FPS gains then I suggest you wait until the 8000 series, then pick up either a 8000 or a 7000, which ever has better performance for the price.
 
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