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Overclocking help advice for a i5 750 and MSI P55A-GD55 motherboard

fireisdangerous

fireisdangerous

fireisdangerous

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Hi there im looking for some help in overclocking my cpu.

My set up is as follows:

i5 750 @stock
Corsair H50
MSI P55A-GD55 Motherboard
8gb Corsair Vengeance DDR3 1600 MHz CAS 9
1x HIS R5850 iCooler V Turbo 1024MB
550w Be Quiet PSU
Silverstone Raven 2

Current idle CPU temp @ 33c
Current idle GPU @30c (fans set to 20%)
All case fans set to low.

Is there anyone with experiance with overclocking using this boad and cpu or just general tips would be fantastic.

Thanks in advance

Tony
 
lol for when I read the P55A-GD55 (without clicking the link) on the other thread, for some reason I was thinking about a certain Asus board. I have actually help a friend overclocking a i5 760 to 3.8GHz on this MSI board :p

But anyway, might as well aim for 4.0GHz:
TurboMode: Disable
CPU Ratio: 20
BCLK Frequency: 200
CPU voltage: try with 1.325v first, if not stable, increase at bit at a time up to 1.35v
Dram voltage: 1.50v
Dram ratio (or whatever it was called): x8 (so your memory should be at 1600MHz)
PLL: 1.80-1.90v
QPI/Vtt: 1.30-1.35v (you might have to test a bit on this to find the exact figure to use)
 
fireisdangerous said:
Hi there im looking for some help in overclocking my cpu.

My set up is as follows:

i5 750 @stock
Corsair H50
MSI P55A-GD55 Motherboard
8gb Corsair Vengeance DDR3 1600 MHz CAS 9
1x HIS R5850 iCooler V Turbo 1024MB
550w Be Quiet PSU
Silverstone Raven 2

Current idle CPU temp @ 33c
Current idle GPU @30c (fans set to 20%)
All case fans set to low.

Is there anyone with experiance with overclocking using this boad and cpu or just general tips would be fantastic.

Thanks in advance

Tony
Click to expand...

This may help you with overclocking .

http://www.techreaction.net/2010/09/07/3-step-overclocking-guide-lynnfield/2/
 
Marine-RX179 said:
lol for when I read the P55A-GD55 (without clicking the link) on the other thread, for some reason I was thinking about a certain Asus board. I have actually help a friend overclocking a i5 760 to 3.8GHz on this MSI board :p

But anyway, might as well aim for 4.0GHz:
TurboMode: Disable
CPU Ratio: 20
BCLK Frequency: 200
CPU voltage: try with 1.325v first, if not stable, increase at bit at a time up to 1.35v
Dram voltage: 1.50v
Dram ratio (or whatever it was called): x8 (so your memory should be at 1600MHz)
PLL: 1.80-1.90v
QPI/Vtt: 1.30-1.35v (you might have to test a bit on this to find the exact figure to use)
Click to expand...

Thanks for the reply, if i change the bclk to 200 it wont let me change the cpu voltage
 
Marine-RX179 said:
lol for when I read the P55A-GD55 (without clicking the link) on the other thread, for some reason I was thinking about a certain Asus board. I have actually help a friend overclocking a i5 760 to 3.8GHz on this MSI board :p

But anyway, might as well aim for 4.0GHz:
TurboMode: Disable
CPU Ratio: 20
BCLK Frequency: 200
CPU voltage: try with 1.325v first, if not stable, increase at bit at a time up to 1.35v
Dram voltage: 1.50v
Dram ratio (or whatever it was called): x8 (so your memory should be at 1600MHz)
PLL: 1.80-1.90v
QPI/Vtt: 1.30-1.35v (you might have to test a bit on this to find the exact figure to use)
Click to expand...

ive managed to get upto 3.4 by upping the bclk but when i runcpu-z it still says its at stock speed
 
Rather than going straight in at 200 start at 160 or so and gradually work up in 10MHz increments. The first thing to do though is to drop the memory divider right down to take your RAM out of the equation. Test with a bit of prime95 at each stage and keep an eye on your temperatures. The maximum core temp on that chip is 100, but really you don't want to be hitting 80. When it becomes unstable up the core voltage a bit and try again. Stop when you have a stable setting that doesnt get too hot under load, and doesnt need much more than 1.35v core voltage. Going straight in at ultra aggressive settings is a recipie for breaking something.
 
Blue160 said:
Rather than going straight in at 200 start at 160 or so and gradually work up in 10MHz increments. The first thing to do though is to drop the memory divider right down to take your RAM out of the equation. Test with a bit of prime95 at each stage and keep an eye on your temperatures. The maximum core temp on that chip is 100, but really you don't want to be hitting 80. When it becomes unstable up the core voltage a bit and try again. Stop when you have a stable setting that doesnt get too hot under load, and doesnt need much more than 1.35v core voltage. Going straight in at ultra aggressive settings is a recipie for breaking something.
Click to expand...

thanks for the recomendation, i dont really know what im doing, what setting controls the memory divder
 
If you don't know what you are doing, read as many overclocking guides as possible then start slowly. Dont change voltages till you know what everything does. Take your time, and learning to overclock is extremely rewarding.

When you've adjusted a few settings, and you think things are stable leave things as they are for a week to make sure everything is ok. Don't immediately push even further. I ruined a stick of RAM a couple of years ago by changing settings without knowing what I'd really done then immediately hitting GTAIV for a couple of hours........
 
I've got the MSI P55-GD65 and this board has a massive vdroop (and a substantial vdrop as well).

I recommend using LLC in BIOS if you aim for a high overclock, watch out for the temps though! And the load voltage in CPU-Z (verified with a multimeter, it is quite accurate in fact).

I'm using 1.34V for the overclock in sig (3.54GHz on 4 cores, 4.05GHz on 1 or 2 loaded with Intel Turbo Boost). That is the voltage in idle with Speedstep and all C-states enabled.

The vdroop makes the voltage drop to 1.27V under full load though which isn't too worrying at all as I'm able to keep the temps under 65c with the fan set on low on a hot summer day.
 
Depending on your particular chip, 1.35 just might not cut it for 4GHz. I've got a bit of a volt-hungry chip it would seem and I need a fair bit more. Never mind though - the H50 keeps it under control nicely. Here's my settings if they're of any use...

bclk 200
cpu multi 20
mem multi x8
qpi ratio x32
pci clock 100
ram 9 9 9 24 (XMP disabled, mem setup manual with performance enhance 'turbo')

vcore 1.375 in BIOS (CPUZ shows 1.36 at idle and 1.392 load with LLC on level 2)
qpi vtt 1.3
pch 1.1
cpu pll 1.9
ram 1.66

cpu and pci clock drive both 900mv

turbo boost, EIST, C states etc all off.
 
Thanks for all your help, ive managed to get the cpu uto 3.4hz using a mixture of everyones settings, if i go any higher than 170 bclk windows wont load.

It says 3.4hz in the bios and during the post sequence but when i run cpu-z it only picks up that it is at stock speeds? is there any other way to confirm that i have overlocked it to 3.4hz.

in the system properties is now showing as 3.36ghz?
 
If the DRAM voltage is set to what it says on the sticker on the stick that should be fine. Keep your RAM at stock speeds or underclocked while you find the limit for the processor.

You may need more VTT, but bear in mind this must be within 0.5v of the DRAM voltage or you can brick your CPU.
 
Blue160 said:
If you don't know what you are doing, read as many overclocking guides as possible then start slowly. Dont change voltages till you know what everything does. Take your time, and learning to overclock is extremely rewarding.
........
Click to expand...

Dont suppose you would mind posting your BIOs settings for the OC would you?

Thanks if you can!
 
Intel EIST - Disabled
C1E Support - Disabled
CPU Base Frequency - 200
OC Stepping - Disabled
Adjust CPU Ratio - 20
DRAM Timing Mode - Auto
X.M.P. - Enabled
Memory Ratio - 4
QPI Ratio - Auto
Adjust PCI-E Frequency - 100
Auto Disable PCI Frequency - Enabled
VDroop Control - High VDroop
CPU Voltage - 1.350
CPU VTT - 1.254
CPU PLL Voltage - Auto
DRAM Voltage - 1.650
Spread Spectrum - Enabled

Any settings not mentioned are at default or auto.

Hope that helps :)

P.S. Not my fault if you fry something :D
 
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