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Trouble Overclocking Athlon II X4 620 Propus 2.6GHz

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December 2, 2009 6:01:07 PM

Hello Everyone,

I am trying to overclock an athlon II X4 620 but my system continues to fail over 212 X 13 with everything else set to auto on an ASUS M4A785TD-V EVO mobo. I have tried increasing cpu voltage, decreasing cpu voltage, decreasing ht link but it continually fails. I cannot increase the multiplier as it is locked at 13. Any help, advice, or suggestions would be greatly appreciated. I am not trying to go all out, I just want to increase the cpu to 3.1 or 3.2.

Thanks :) 
a b K Overclocking
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December 2, 2009 6:23:11 PM

Perhaps your memory isn't liking the FSB, operating at close to its limit without OC as it is? Try dropping your memory multiplier down a level. You haven't mentioned your NB or HT link, but at that low of an FSB increase, they are probably not the problem, yet.
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December 2, 2009 6:29:38 PM

JofaMang said:
Perhaps your memory isn't liking the FSB, operating at close to its limit without OC as it is? Try dropping your memory multiplier down a level.


I thought that as well but I cannot find any options to drop the memory in my bios . . or in the amd overdrive. . . . memory is A-data 4 gigs DDR3 1600

I am fairly new at OC so I am fairly confident it is my inexperience. . but I have tried several guides but they haven't helped.
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December 2, 2009 6:37:46 PM

So by leaving EVERYTHING on auto and raising the FSB to at least 210 you still get a BSOD?
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December 2, 2009 6:43:14 PM

OvrClkr said:
So by leaving EVERYTHING on auto and raising the FSB to at least 210 you still get a BSOD?


No sorry, the highest I have been able the FSB is 212 with everything on auto. When I increase to 215 or 220 the mobo makes me reconfigure prior to booting. The mobo has a section to overclock by % and even when I try that, 5%, 8%, or 10%, it refuses to boot and goes back to the bios.
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December 2, 2009 6:44:53 PM

Well first of all did you manually set your RAM timings and voltage prior to the overclock? Meaning you have to make sure your system is stable before you do anything....
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December 2, 2009 7:04:39 PM

OvrClkr said:
Well first of all did you manually set your RAM timings and voltage prior to the overclock? Meaning you have to make sure your system is stable before you do anything....


Ah, then no I have not manually adjusted the RAM timings or voltage. I have searched the bios for these settings but I have been unable to find them. The system is stable when everything is set auto, so I suppose the RAM settings are where I should search . . . any suggestions?
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December 2, 2009 7:19:30 PM

Here are a few screenshots of your bios, if you look at the 2nd picture from the first row you will see a list of values that pertain to the timings. Those have to be adjusted depending on your ram spec's :

http://www.ocworkbench.com/2009/asus/M4A785TD-V-EVO/g6....

Once you set the correct timings and voltage then you can run an instance of prime95 just to ensure full stability..
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December 3, 2009 3:20:49 PM

OvrClkr said:
Here are a few screenshots of your bios, if you look at the 2nd picture from the first row you will see a list of values that pertain to the timings. Those have to be adjusted depending on your ram spec's :

http://www.ocworkbench.com/2009/asus/M4A785TD-V-EVO/g6....

Once you set the correct timings and voltage then you can run an instance of prime95 just to ensure full stability..


Okay, well with everything set to auto Prime95 ran fine. Found the RAM was being detected at 1333 . . changed to 1600 in the bios and set the CAS and timings manually to match the specs. Left everything else on auto and prime95 ran fine (left for an hour each).

So, increased FSB back to 212 . multiplier 13 > runs fine. Bump up to FSB to 215 won't boot.

HT frequency is set to auto . . (bios shows as 2000) options to drop it to 1600 and lower. When I leave on auto, bump FSB to 220 won't boot. When I leave FSB at 220 and drop to 1600 won't boot.

Dropped CPU-NB multiplier to 8 . . FSB to 220, won't boot.

Run memtest perhaps?

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December 3, 2009 3:53:49 PM

2.756Ghz is the highest it will go? Do you have any other CPU that you can use to test? Im kinda stuck here, not sure if it is the CPU or the mobo...

Leave the HT freq. alone (2000Mhz), you won't achieve anything by lowering or raising that value.

It's not your ram, if it was the system would still boot at a higher clock and then crash while runing a benchmark, game or prime for example.



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December 3, 2009 5:13:22 PM

OvrClkr said:
2.756Ghz is the highest it will go? Do you have any other CPU that you can use to test? Im kinda stuck here, not sure if it is the CPU or the mobo...

Leave the HT freq. alone (2000Mhz), you won't achieve anything by lowering or raising that value.

It's not your ram, if it was the system would still boot at a higher clock and then crash while runing a benchmark, game or prime for example.


I haven't tried 213 or 214 but I know 215 will not work. Unfortunately I do not have an extra mobo or CPU to test . . I may have to make a trip to BB to find out. Thanks OvrClkr for all of your help and suggestions.

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December 3, 2009 5:18:16 PM

Yeah, while full auto settings are not ideal (or desireable) for Max OC, you should be able to see more than a 6% OC with auto settings.

Might dropping the CPU multiplier a notch, and lowering the memory ratio be a diagnostic for finding a deadspan in usable FSB OC?
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December 3, 2009 7:00:25 PM

I'm pretty positive it is the mobo. I reseated all connections to the mobo, including cpu, and its having the same issues. I updated the bios to the latest and same issues. It was giving me bad checksum messages for awhile and whenever I would save changes and exit and it would never boot back up causing me to reset the battery on the mobo for it to boot back up. Ugh, well an RMA to newegg and new mobo will hopefully solve the problem.
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December 3, 2009 8:11:15 PM

Do you know anyone that has an AM3 mobo? The best way to discard any issues would be to test your CPU on a different mobo. I just don't want you to get a new mobo and have the same issue. Trying to gather up as many options possible....
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December 3, 2009 9:00:16 PM

OvrClkr said:
Do you know anyone that has an AM3 mobo? The best way to discard any issues would be to test your CPU on a different mobo. I just don't want you to get a new mobo and have the same issue. Trying to gather up as many options possible....


Nope, unfortunately I do not have any other friends with an AM3 board. I think I may head to best buy to see if they have any AM3 boards just so I can test/return. I'm now reconsidering sending it back to newegg since I have to pay for return shipping and 15 bucks for a restocking fee. . . especially since I am not positive it's the mobo. Well, I guess at worst I'll have to settle for 2.75.

Thanks again for all your suggestions.
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December 3, 2009 9:09:18 PM

Yea, if they will let you test the CPU at BB that would be great....
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December 4, 2009 5:05:26 AM

Try dropping your multiplier down to 10, and seeing if you can than overclock beyond 212, should determine if its your chip or your motherboard.
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December 10, 2009 9:17:59 AM

OvrClkr said:
Yea, if they will let you test the CPU at BB that would be great....


Well I found a friend with another AM3 board and it is a bad mobo. I was able to achieve 3.1 on his board without altering voltage, timings, etc

Thanks for all your help
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December 10, 2009 1:30:07 PM

Well hopefully you can get a replacement soon, let us know if you run into any issues with the new board....
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December 13, 2009 10:54:34 PM

I have an identical setup here to this and am hitting the same issues, cant get the FSB frequency above 212, must be dodgy asus motherboards.
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December 14, 2009 10:21:30 AM

mk2cav said:
I have an identical setup here to this and am hitting the same issues, cant get the FSB frequency above 212, must be dodgy asus motherboards.



That is not good. . . I just RMA'd mine to newegg which they processed as a refund instead of replacement. I bought the same board, scheduled to arrive tomorrow.
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December 16, 2009 8:33:25 PM

Well son of a bitch. I got the second board today . . same problem :( 
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December 16, 2009 8:46:14 PM

Lower your ram frequency a notch and test again, raising the FSB in increments till it BSOD's....
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December 17, 2009 1:56:31 PM

I have the same motherboard and CPU, I also have DDR3 1600 (not the same ram). I have my CPU stable at 3.25, could go higher idles @ 18C with Cool & Quiet on.

1) Anyways, drop your ram multiplier to as low it will go probably 400 or 533, can't remember exactly since I do not have it in front of me. Right now you do not care what it is running at you are trying to get your CPU stable.

1a) Make sure you set the correct voltage for your RAM. I believe it is the bottom you need to manually set that or you might run into problems (Memory Overvoltage). I did not do this the first few times and had problems myself. I had to set mine to 1.6

2) Put your CPU voltage at 1.4 or 1.42 (mine is at 1.4). I would not go higher then 1.5 (if you are going to go that high you need to monitor your temps, you need to do that anyways)

3) Put your multiplier at 13 and FSB at 250

4) Leave everything else on [Auto] for now.

5) You might want to turn off cool and quiet also.

6) After you get your CPU stable then you can start upping your RAM multiplier.

Hope this might help some.
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December 17, 2009 3:09:26 PM

Sorry messed up #2

Shouldn't be FSB.

#2 should be:
2) Put your multiplier at 13 * 250
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December 17, 2009 5:54:48 PM

Deathviper said:
I have the same motherboard and CPU, I also have DDR3 1600 (not the same ram). I have my CPU stable at 3.25, could go higher idles @ 18C with Cool & Quiet on.

1) Anyways, drop your ram multiplier to as low it will go probably 400 or 533, can't remember exactly since I do not have it in front of me. Right now you do not care what it is running at you are trying to get your CPU stable.

1a) Make sure you set the correct voltage for your RAM. I believe it is the bottom you need to manually set that or you might run into problems (Memory Overvoltage). I did not do this the first few times and had problems myself. I had to set mine to 1.6

2) Put your CPU voltage at 1.4 or 1.42 (mine is at 1.4). I would not go higher then 1.5 (if you are going to go that high you need to monitor your temps, you need to do that anyways)

3) Put your multiplier at 13 and FSB at 250

4) Leave everything else on [Auto] for now.

5) You might want to turn off cool and quiet also.

6) After you get your CPU stable then you can start upping your RAM multiplier.

Hope this might help some.


Ah, that helped a lot! I dropped the RAM to 400mhz, bumped up the FSB to 250 and CPU set to 1.4 . . this worked for about 20 seconds and then blue screened. Dropped to 245 and it boots into windows. Ran prime 95 and it failed after 25 seconds. Dropped the FSB to 240 and it ran prime 95 for about 15 minutes before dropping cores. Dropped down to 235, cpu 1.4, RAM 400, RAM voltage 1.6 and it ran prime 95 for over an hour with no issues, about 59C on stock HS/fan. I'm pretty happy with this result. . . I tried 250 with a higher CPU and RAM voltage but it would not stay stable. .

Either way, thanks for the suggestions! I hoped this board would be a little more cooperative but o'well.

Thanks again to everyone
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December 17, 2009 6:12:16 PM

Do you have a link to the RAM you got, maybe newegg or something? I could take a look and give you a couple more suggestions.

I will tell you not to expect DDR3 1600 with this CPU, but you should be able to get somewhere around 1300 which you will not notice the difference unless you are doing benchmarks.

I like the board so far for the money (you have good combo CPU & motherboard).
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December 17, 2009 6:29:25 PM

Deathviper said:
Do you have a link to the RAM you got, maybe newegg or something? I could take a look and give you a couple more suggestions.

I will tell you not to expect DDR3 1600 with this CPU, but you should be able to get somewhere around 1300 which you will not notice the difference unless you are doing benchmarks.

I like the board so far for the money (you have good combo CPU & motherboard).



Here's the link

A-DATA 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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December 17, 2009 6:48:11 PM

Give me a sec..............
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December 17, 2009 7:05:01 PM

Ok, good.

DDR3 1600 (PC3 12800)
Cas Latency 9
Timing 9-9-9-24
Voltage 1.65V -1.85V



So,

1) CPU: If you are wanting a higher CPU overclock get this where you are happy first before you move to your RAM, (You also need to run prime overnight and make sure your CPU is stable) if you are happy with your current CPU overclock then move to 2):

a) The other thing if you are wanting to get a higher CPU overclock is your max temp for that CPU is somewhere around 71 or 73. I would not go near that high though. Somewhere around 60 like you are is fine, since you are not trying to go to high. You could bump your vcore up a little 1.425-1.45 as long as your temps don't go higher) but it sounds like you might have it high enough for you. And a couple or even 100mhz is not big jump. I have a aftermarket cooler Mugen 2 so it keeps mine a little cooler but your temps at 59 are still fine.




2) RAM:

The above is from the spec tab of your RAM from newegg. I noticed you wrote you had your RAM @ 1.6, yours needs b/t 1.65 - 1.85v to get stable probably.

a) Set the voltage to 1.85 right now. (if you aren't comfortable with that 1.75) but your specs say 1.85 is fine. You can always touch them and see if they are getting to hot to the touch. Or back this down some once you find a stable point.
b) If I were you, I would up my RAM multiplier to 533 (that would get you somewhere around DDR3 1300.
c) I would also set my timings manually to Timing 9-9-9-24

on the RAM you probably need to do a,b,c at the same time.





Anyways, give that a whirl and let me know. :) 

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December 17, 2009 7:32:00 PM

Same result. .

I tried to bump the CPU back up to 250 with a voltage increase to 1.45 (and RAM changes below) > wouldn't boot.

Set the RAM timings manually, set to 533, voltage to 1.86, won't boot.
Dropped to 1.75 > won't boot - dropped back down to 400 > timings still manual > voltage 1.85 > boots fine

Not sure why this board doesn't like my RAM . . the other board I tried was an ASUS as well and I was able to get the CPU to 3.25 without adjusting anything else . .

I'd like to get the CPU up to 3.25 but I just don't think its going to happen on this board w/this memory
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December 17, 2009 7:45:11 PM

And you did set the RAM Timing 9-9-9-24?

You might try 10-10-10-30 and 1.85 volts?

I am at work right now, I can look at my settings and let you know what I have. It will probably be an hour and half or so.
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December 17, 2009 8:15:16 PM

PM me your email address and i can send you a couple pics of my bios settings.
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January 6, 2010 5:08:12 PM

Quote:
Mud,

Mind going into the X4 and I5 thread i made in the CPU forum? I'd love to see some benchmarks of that setup.


Where did you purchase your 540?
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February 6, 2010 12:19:55 AM

bigdane,

I have a somewhat similar set-up, excepting the RAM:

Athlon II X4 620, Asus M4A78-EM mobo, 4G Corsair XMS2 1066 RAM, Arctic Cooler Freezer Pro 7.2, OCZ 500W ModXStream ps.

Here are my current overclock stats according to CPU-Z: 3460 MHz Core Speed, x 13 multiplier, 266 MHz Bus Speed, 2130 MHz HT Link, 1.360 Core Voltage, 1066 MHz RAM. That works out to be an approximate 33% overclock on the CPU.

This is the highest I could run my bus and still be stable with a 12 hour Prime95 Stress Test. My highest CPU temp at 100% is 51 C.

It took me quite some time to come up with the perfect combo. Besides the poor BIOS options (unable to adjust FSB:RAM ratio, no ACC option, ect.), my biggest roadblock seems to have been my HT Link speed. Just a guess, but I think you might also be experiencing issues with your HT Link

I am running my RAM at the recommended timings from the manufacturer 5-6-6-18 with with no increase in RAM voltage. You might do well to follow the manufacturers recommended timings for your DDR3 RAM and just bump the voltage up a tad if go a little over the 1600. Remember that when you increase the FSB, you are also increasing a number other variables, including your RAM frequency and HT Link.

I'm no expert on the topic, but here is what worked for me in my BIOS.

CPU/HT Reference Clock: 266
Processor Frequency Multiplier: x 13.0
CPU/NB Frequency Multiplier: x 8.0 (stock setting is x 10.0)
CPU Overvolt: +100mv
VDDNB Overvolt: +33mv
HT Link Speed: 1.6 GHz (stock is 2.0)
Memory Clock Speed: 400 MHz (stock is 533)
Memory Overvolt: 2.10000

I know this post is a little late, but maybe this will still be of use to you or someone else; however, every system (even ones with the same hardware) are different.
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March 9, 2010 2:17:43 PM

I think that athlon x4 620 can support max 1333 mhz ram. It is not power hungru in my experience.
I am running it @3.12ghz ,240mhz fsb x13 on gigabyte ga-ma770-ud3 motherboard
800 mhz ram set@960mhz 7-7-7-25 timings
disabled cool'n'quiet
core voltage -75mv!!! all other voltages @default
ht link 1.8
cpu/nb frequency x9
max temp on full load 46c even when using cpu fan smart control.
24h stable!!
I think your problem is ram. Maybe it's not very good for oc...
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April 8, 2010 12:10:48 PM

I'm running my X4 on the Asus M4A785TD-V EVO, its sitting at 250MHz fsb, 2000 on the HT, I locked out the PCI-e so its not OC'd and also locked my cheap old vid card out. I had to manually set my Vcore also, this board on auto wants to go right up to 1.5v and it really makes things to hot. I also dumbed down my ram by one level so its now running at the stock 1333MHZ, but at the 8-8-8-22 timings. I think the original poster problem is the ram in general isnt properly supported by the X4. Everything I've seen looks like the 1333 MHz ram is the fastest you can use with this cpu. I have tryed going up to 255MHz on the fsb, but Prime95 crashed out and i got a reboot that didnt happen at 250 which looks like the max for what ive got here. I'm running plain Corsair DDR3 1333, not any of the high speed/gaming memory and I'm still on the stock HS/fan so 3.25GHz Im getting is likely all i will get. Considering I wasnt really interested in OCing the X4 anyway, I've got more than I ever would have thought out of it!
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