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AMD 1045 Overclock help

post #1 of 9
Thread Starter 
This is my first build, and I would like to push the 1045t from 2.7ghz to atleast 3.2ghz.

My current PC build is:

AMD 1045t 2.7ghz
Sapphire 7850 OC
650 watt Corsair - is this enough to overclock?
GIGABYTE GA-970A-D3 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
4gb Ram Vengeance ddr3 1600 mhz
120mm fans x4

I just wanted to know if this build is good enough to handle an overclock up to 3.2 ghz, and if it's possible someone can guide me step by step on how to do this. I want to make sure I can keep it stable 24/7 while not pushing the temperature too high, right now it runs a 20C idle and 27C with average use, i've seen it go up to 31C while playing battlefield 3 on high after being on for over 5 hours.

If anyone can help me I would appreciate it, thanks guys.
post #2 of 9
There is only one way to find out, mate.

In theory, if your chip is even somewhat decent, you will have no trouble doing so.

Start overclocking in bigger steps at first, then stress test each time while monitoring the temperatures. Prime95 (x86 version here) should suffice in terms of temperature output. My recommendation about the temperature monitor would be RealTemp.

If this is your first time overclock, I'd suggest reading up a bit before attempting anything, just to be on the safe side.
Or if you need an overclocking guide concerning this rig, I'd recommend reading through a couple of topics:
Phenom II Overclocking guide
Super extensive knowledge base thread.
*external source: Wikipedia* Information regarding the RAM timings

tl;dr version -
Your CPU multiplier is locked. This means you can OC via FSB clock.
If you want to find out the maximum potential and set up an environment that suits you, I'll try to establish some major key points:

- Find out your maximum FSB. Lower CPU multiplier a lot - set it to near the bare minimum would be my recommendation. Lower RAM multiplier (thus underclocking the RAM as well). Increase FSB by 5MHz until you can't boot. Increase FSB voltage. If you get stable, raise again. Repeat last steps with smaller increments until adding voltage won't stabilize the system. That is your maximum FSB.
Keep note that for a potentially more stable overclock, I'd reckon dropping down 1-2MHz from your top clock and setting current to minimum stable for that bus frequency.
*also keep note that sometimes you need to adjust the HT Link (HyperTransport) multiplier to run around the default 2000MHz. HT Link Multiplier * FSB = Effective HTLink frequency, since it represents the speed that the CPU communicates with the other components at.

- Find out your maximum CPU clock. Raise CPU multiplier again, lower RAM ratio, set default FSB. Proceed with raising FSB frequency until CPU becomes unstable. Add VCore. Rinse and repeat until you reach out of your comfortable temperature zone or adding three incremental VCore steps won't stabilize the CPU.
*keep in mind adjusting the HT Link frequency accordingly.

- Find out your maximum RAM clock. Leave CPU multi to minimum. Set default memory ratio, proceed with raising FSB. When the RAM gets unstable, two scenarios:
- being still far away from maximum FSB - reduce RAM:CPU ratio, proceed raising FSB
- being a couple of tens of MHz near maximum FSB - fine tune RAM (raise voltage, loosen up timings)
Make your choice between the two until you get a satisfactory RAM speed with timings you see fit.and FSB (ultimately) as close as possible to the maximum your CPU will run stable at.

What I'd suggest is keeping a spreadsheet of the three main component speeds and their maximum values and by the end of all the individual tuning, you should be able to set up an optimal environment between the three which would, hopefully, run stable. If not - lower FSB a notch (if any further adjustments are available/necessary, do so (i.e. RAM timings, HT Link speed, lowering voltages).

Your goal, obviously:
Running FSB as high as possible while the CPU is stable and RAM speed as high as possible with as tight clock cycles as possible. Lower voltages to the minimum required for stability.
(Someone please correct me if I'm wrong, but I believe in terms of real-world performance, rounding up RAM at a 1 clock cycle less / speaking of CAS, tRCD, tRP/ would equal a gain of about 10-13MHz speed increase?)

N.B. I haven't done this in a while, so if anyone notices anything wrong, please post right away and I will, too, take note.

P.S. Welcome to OCN! And also don't feel discouraged to use the search function. tongue.gif
Edited by fragamemnon - 5/30/13 at 11:31pm
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post #3 of 9
Thread Starter 
Well, I got it up to 3.1ghz because I want to be kn the safe side. I also noticed my ram was being put at 1333 mhz by my computer, even though it is 1600 mhz, so I bumped to somewhere in between 1500 and 1550 mhz. One thing is though, how do I have all 6 cores running constantly? It seems as if all six cores are working but at times they all arnt showing constant 3.1 ghz speed, it seems to fluctuate. However, I noticed an 8 point fps increase in Hitman a solution on ultra: 56.7 max, average: 48.4, min: 43.7, after increase in ram speed and cpu speed. I didn't play too long, just tested and I was at 30c temp. Im gonna run prime95 when I am at home again.
post #4 of 9

What rev on the 970A D3?

post #5 of 9
Quote:
Originally Posted by huszardx View Post

Well, I got it up to 3.1ghz because I want to be kn the safe side. I also noticed my ram was being put at 1333 mhz by my computer, even though it is 1600 mhz, so I bumped to somewhere in between 1500 and 1550 mhz. One thing is though, how do I have all 6 cores running constantly? It seems as if all six cores are working but at times they all arnt showing constant 3.1 ghz speed, it seems to fluctuate. However, I noticed an 8 point fps increase in Hitman a solution on ultra: 56.7 max, average: 48.4, min: 43.7, after increase in ram speed and cpu speed. I didn't play too long, just tested and I was at 30c temp. Im gonna run prime95 when I am at home again.

If you disable the Cool'n'Quiet from the BIOS it will run at 3.1GHz at all times.
It is fluctuating because when the CPU is not under heavy load, it drops the multiplier and the voltage according to the defined power states, reducing power draw and respectively saving energy.
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post #6 of 9
Thread Starter 
Oh ok. So do you think with those specs and running with a 650 psu ill be great, fine, or need a new psu. Thanks again guys.
post #7 of 9
You should still end up having plenty of headroom with that PSU. thumb.gif

However, I'd suggest cooling the MOSFETs a bit if you go higher in terms of overclocking - they may run a bit hot. The finger method will suffice in determining the temperature. This motherboard supports 140W CPUs officially (amirite?) with a 4+1 phase power design.
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post #8 of 9
Thread Starter 
Alright thanks man, ya my mb does support that. I actually bumped it up a bit to 3.2 ghz and ram went with it to 1585 mhz(my ram again is 1600 mhz). I did a stress test for about an hour and my cpu only reached a max of 51c, and then fell back down to 46c. Now that ive established this, will I see better performances is bf3 and planetside 2? Minor, moderate or massive quality increase? I saw a good increase in hitman, but not that much in tomb raider.
post #9 of 9
That would depend. You will see greater improvements in CPU-intensive games. You know, where your CPU (or at least a couple of CPU threads) is pegged at 100%. In other, more GPU-intensive games, you will barely notice any difference. Only the RAM clocks will get it up a bit.

Try pushing that RAM a bit further imo. tongue.gif See how far it goes
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