help with oc'ing my FX

Matt82

Matt82

Matt82

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Joined
13 Mar 2004
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My spec is as follows:

FX4130 BE
Gigabyte 970a UD3P
Corsair CX600M
4 x 2GB Corsair XMS3
Artic Cooling Freezer 13 CPU cooler

I have managed to get the FSB to 260 stable on a x17 multi but when i go any higher it becomes unstable. vcore is at 1.525v. NT and HT are both at x9 multi (2340mhz) with 1.3v going into each. i think dram is on 1.55v (stock is 1.5v) with the memory frequency at around 1400mhz (a touch lower I believe). CPU temperature never goes any higher than 50-53 when prime is running or playing BF4 etc.

Now, I cannot find any OC guides on this specific mother board so I don't know if it is the mobo limiting me atm. With the multi on x17.5 I get 4.55GHZ but prime fails (usually on a single core) after 4 hours or so. any ideas on how to get this stable and potentially hit that 1ghz club? (please do not recommend turning FSB down and cranking up the multi).
 
Ignore prime, my core6 fails prime every test I do after about 5 minutes. for a stability test I uses asus realbench. If it passes that it'll stay stable for everything I do!
 
i think i will look for a different piece of software as well.

i'm kind of surprised at the lack of responses considering this is an overclocking forum, lol...
 
I think that 4.4GHz on that motherboard is quite good for a 24/7 OC. The bulldozer core does not OC quite as well as the PD and it is a 125W TDP similar to the later 6/8 core processors. However your temps look good, is it throttling under load?

Anyway I think you are going the right way with FSB (bus clock) maxed and then using the multi. If you drop the bus clock a little to get a higher multi, is this better? I assume that the ram you are using is 1333 rated? Around 250MHz will bring the memory to around stock on your current setting, allow 2500MHz HT and NB and 18x is 4500MHz on the CPU.
Ensure plenty of case ventilation and particularly around the VRM area behind the CPU. Try to minimise the vcore a bit, and adjust any LLC settings to reduce vdroop if possible.

Good luck, andy.
 
nkata said:
I think that 4.4GHz on that motherboard is quite good for a 24/7 OC. The bulldozer core does not OC quite as well as the PD and it is a 125W TDP similar to the later 6/8 core processors. However your temps look good, is it throttling under load?

Anyway I think you are going the right way with FSB (bus clock) maxed and then using the multi. If you drop the bus clock a little to get a higher multi, is this better? I assume that the ram you are using is 1333 rated? Around 250MHz will bring the memory to around stock on your current setting, allow 2500MHz HT and NB and 18x is 4500MHz on the CPU.
Ensure plenty of case ventilation and particularly around the VRM area behind the CPU. Try to minimise the vcore a bit, and adjust any LLC settings to reduce vdroop if possible.

Good luck, andy.
Click to expand...

thanks for your reply. could i ask where you got that 4.4ghz is good for this mobo? i have looked everywhere for other peoples results/a guide on this board but with no luck! i have up'd the multi on NB and HT to x10 and running more tests. if i can get it stable as it is i may just leave it. for under £90 i am pretty happy with the results. although i really want to hit that 1ghz club. maybe dropping the FSB and cranking up the multi is the way forward?
 
Matt82 said:
thanks for your reply. could i ask where you got that 4.4ghz is good for this mobo? i have looked everywhere for other peoples results/a guide on this board but with no luck! i have up'd the multi on NB and HT to x10 and running more tests. if i can get it stable as it is i may just leave it. for under £90 i am pretty happy with the results. although i really want to hit that 1ghz club. maybe dropping the FSB and cranking up the multi is the way forward?
Click to expand...

I assume you mean the 5GHz club :D

I have tried several ways to OC and it is just gut feeling that ~4.4GHz is good for a 970 board. My M5A99x was good for 5Ghz but not on prime. It would bench and encode and did not fall over. Max. Gflops throughput was found at 302 bus x16 multi (with IBT), or 4.8GHz with memory at about 2GHz. That was on air cooling with a Phanteks cooler. My current setup below uses a 250 bus and 4.75GHz CPU, 2.5GHz HT and NB, 2GHz memory
 
It's all about the VRM cooling. The big advantage of water cooling for these CPUs is that it de-clutters the VRM area and allows you to stick fans in there. My m5a97 can deliver the power but the socket temp just gets way too high in prime. At some point I'll change my case for one with roof mounted fans.
 
cwgk91 said:
Ignore prime, my core6 fails prime every test I do after about 5 minutes. for a stability test I uses asus realbench. If it passes that it'll stay stable for everything I do!
Click to expand...

Your CPU is probably faulty if that's the case, a stock CPU shouldn't fail anything (software bugs aside). It's bad advice to just tell people to dismiss such problems.
 
4130 is low power enough to be pushed a fair bit harder if the board/memory can stay stable. 4.8 would not require more than the boards VRMs can handle on this chip. If it was an 8xxx i would assume your not far off the limit but a 4130 is not exactly a power hungry beast.

I would see where you can get with a lower bus and higher multiplier.

8+2 phasing paired with a 4130. I am sure you will be fine power wise without VRM fans or watercooling.
 
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Well I got 260 stable but have lowered the bus and turned the multi up. I really want to hit 4.8 or as close as possible to it. In all honesty I do not think the 970 boards are good past 4.5-4.6ghz as they start to become unstable. I will continue testing and let you know how I get on. Any further advice or ideas would be greatly appreciated
 
I have a 970 board which is good for 4.7Ghz on a 8150 if VRMs stay stable. Considering its an asus 4+1, i expect yours will be fine as it has a much better phasing and has VRM heatsinks and also is on a much lower power chip. The limiting factor with overclocking on these boards is the VRMs but they should stop you from hitting 4.8Ghz on a 4130. Memory is where i would be looking if you hit stability issues on a bus clock. Run your memory at its lowest multiplier while you find CPU clocks, this way you can find the max CPU clock without having to worry about memory stability.

After you find your clock, put the memory up to its highest stable frequency or nearest rated frequency. A touch on the CPU/nb voltage might help with stabilizing the memory controller if the memory is still give you trouble below its rated speed.
 
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