Problems with performance after adding more ram!

Swifty55

Swifty55

Swifty55

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Hey peeps. I've recently added another 4gb to my system to make 8gb. Problem is now my games crash after 10mins and my fps is low.

Rest of my system;
i5 760 @ 4GHZ 200*20
Asus P7P55D-E
8GB XMS3 - 4x2GB @ 1600mhz
GTX 460

I've upped my vcore to 1.35v and ICM to 1.325v.

I'm currently running memtest with no errors right now.

Any other ideas?

Thanks.
 
You may have to reduce your clock as you're now using all 4 dimm slots. Using all the slots can sometimes compromise a stable clock using 2 slots.

I would try reducing your clock by 20% and if it becomes stable you can then gradually build it up again. You may end up with a slightly lower clock - but you shouldn't notice the difference in day to day usage.
 
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Ok, after a lot of ****ing about. Things seem to be stable right now. I loaded the XMP profile which set the following;

160x18 = 2880Mhz
DDR3 @ 1600 9 9 9 24

Now, if I was to get my multiplier up to 20/21 will that be fine in terms of gaming/general use, also should I set the QPI to anything?

Is there a difference between 160 and 200, I also don't get why anything higher than 160 (no matter what voltage the ICM is on) my memory becomes unstable??

I'm not that much up-to-date with the i3/5/7's and OC'ing so I generally am confused a little! :(

Thanks
 
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i dont think there is much difference running at 1330mhz instead of 1600mhz even if there is i dont think you notice it as much.
 
No, memory speed/latency differences are very difficult to pickup on. You seem to have gotten them to run okay at PC3-12800 now so congrats. :)
 
Well, I've not got it stable at;

160x21 = 3.3Ghz
1600 - 9 9 9 24

As stated, I won't see much difference in terms of my lower CPU clock?

Thanks.
 
Swifty55 said:
As stated, I won't see much difference in terms of my lower CPU clock?

Thanks.
Click to expand...

You may notice a 'slight' difference in performance in certain apps/games as 0.7Ghz is a considerable drop in performance - but most games/apps should be uneffected as it's still a very fast CPU even at stock for current software.

I was hoping you would only have to drop a couple of hundred Mhz. If you keep on experimenting over the next few days you may find that you're able to get closer to your original clock of 4GHz - but it's unlikely that you'll ever hit your previous clock using all the DIMM slots.

If you're predominently a gamer there's an arguement to be had that you would benefit more from the higher clock than the extra 4Gb - but you probably don't want to hear that. :)
 
Hmm, thanks for the reply.

I've currently done a switch around, and now at 200x19 = 3.8Ghz.

I've been using LinX to run 20 times using 2GB as that would pick up a fault straight away - if it passes that I then try Prime95 blend as that seems to be the best to test stability?

Or should I use the ALL feature in LinX?

Cheers.
 
I run cycles of IBT (LinX is fine too) for quick tests but then run prime 95 over night for a more thorough and definitive stress test.
 
Ok, it's starting to **** me off now.

6 hours of Memtest86 detects no errors, LinX completed all 20 runs at full memory without faults which took more than 2 hours, ran Prime95 without faults for 1 hour...

Yet as soon as I get in game, I get either a crash or blue screen. Seriously, why the **** is it so hard?

My E6600 ran 4 sticks without any problems...

GAH!
 
Looks like you have a bit more tweaking to do - i'm afraid it can take time to get 4 slots stable with a substantial clock (not all boards/cpu's are equaly - even like for like.)

I would manully input the memory timing etc - perhaps run them slightly looser.

Also, have you disabled 'spread spectrum' and 'speed step'?
 
Yes, I've disabled those.

I've tried all sorts, it just seems that unless my motherboard is running at stock my games just crash?

Any sort of OC results in problems, even when running ram below 1333 speeds... with timings of 9 9 9 24.

Even set Vcore 1.4v and ICM to 1.375v with no luck.
 
Have you tried testing the system at the original 4GHz with just the 2 sticks of new memroy installed?

The above is also a possibilty - return memory via DSR and sell the other 2 via MM.
 
'Just' the new memory at the original 4GHz?

If so you will need to punish it with a heavy game session, of your choice, and then prime 95 it overnight.
 
Swifty55 said:
Yes, just the 2 new sticks at 4ghz - 1600.
Click to expand...

Start abusing it - if it buckles there's hope that you have a flakey set and that a replacement set 'may' give better results.

If the new sticks pass all your testing then you're going to have to try and balance your BIOS with a revised clock - or think about 2 x 4gb (a PITA i know).

Good luck with it - let me know how you get on.
 
Right, after moving the sticks around. It seems there may be a problem with my DIMM slots?

4GB only works in the Blue Channel slots, if I put them in the black slots I get the memory error light and my PC doesn't boot.
 
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