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Overclock questions.

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#1
First of all, I have an AMD Radeon Sapphire HD 7750 OVERCLOCKED (be ready) from 800 Core Clock to 1181, and from 1125 Memory Clocl to 1303 MHz, stable 24/7 overclock with 1.3VDDC(max) from 1.125 afaik, +20 Power limit, and only getting its power from the PCI slot. My first question is, even tho I have somehow only 60C on 80% usage, why I can't oc it further whitout 1. Getting "game freezes" after raising Core clock higher or artifacts that can be only fixed by reboots if I raise Memory Clock?
My second question would be, I have an Asus M5A78M-L LX3 mobo with latest bios and AMD FX 6300 with stock cooler, currently running at ... cpuz say 4.3 GHz at 1.428V max peak, 20.5 Multiplier and 2730 HTlink at 210 Bus Speed, NB Freq is 2100. So, my question would be, how I can overclock it for better performance ? I already have better performance, but I don't really understand what's the difference if I raise only the CPU core clock vs HTLink and NB freqs too :(
Third question, how can I boot ONLY with IGPU ? I have a bricked GPU, and if I try to boot with that, PC automatically tries to boot with that bricked GPU, not with IGPU, so how can I boot having the bricked GPU only connected and not "running" (but still flashable for bios repair)
Forth question would be, how can I stop back USB-s to deliever power to the mouse ? I always have to manually unplug it, or how can I transfer that front USB-s can deliever power(for charging my phone while PC is offline, like it's doing with back USB)

I can reply for any questions, and thanks for the help guys!
 
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#2
#1 question, lack of proper cooling, could be the PCI-e slot, could be many factor's causing it. Could a a cheap power supply or very old quality unit. Could be solar flares...........
#2 question, get a better cooler(shouldn't be overclocking on stock cooler).
#3 question, In the bios you should be able to switch to IGPU from GPU( it may look different in the menu but you know what your looking for).
#4 question, HUH?
 

eidairaman1

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#3
You are not going to get further with that motherboard or stock cpu cooler for 1. It is a 3+1 design, for safest overclocking would be done on a Sabertooth 990FX R 2.0/3.0 or Crosshair 5.

You could always try heatsinks and a fan blowing directly on the vrms for the cpu and switch to a scythe ashura or other tower style cooler.

You could always change the thermal compound on the gpu or change to a aftermarket cooler.

Some CPUs/GPUs can push further than others due to internal quality. There's a point where parts cannot push further without spending insane amounts of money or doing arbitrary mods.

I would drop the FSB speed back and adjust the multiplier only, HT bus 2200 if allowed to run otherwise set to 2400.
 
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CAPSLOCKSTUCK

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#4
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#5
To cut power to the USB devices when the PC is off, look for a USBPWR jumper in the motherboard and change it's position. It's usually at the top left corner, near the CPU 12v input, but it's sometimes near the first PCI-E 16x slot.
1181MHz in a 7750? WTF? Mine yesterday decided it doesn't like the 935MHz OC it had for years...//Nevermind, bad RAM overclock, back to 935MHz.
 
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#6
#1 question, lack of proper cooling, could be the PCI-e slot, could be many factor's causing it. Could a a cheap power supply or very old quality unit. Could be solar flares...........
#2 question, get a better cooler(shouldn't be overclocking on stock cooler).
#3 question, In the bios you should be able to switch to IGPU from GPU( it may look different in the menu but you know what your looking for).
#4 question, HUH?
1. Ah I have pretty good temps, but still can't raise it further, i guess it's the chips limit
2. I was looking for an answer how/what to overclock, 4.3GHz is enough but i was questioning about HTLink and NB freq (HTLINK 2730MHz, NB 2100)
3. Yea ik, but where :D
4. nwm

You are not going to get further with that motherboard or stock cpu cooler for 1. It is a 3+1 design, for safest overclocking would be done on a Sabertooth 990FX R 2.0/3.0 or Crosshair 5.

You could always try heatsinks and a fan blowing directly on the vrms for the cpu and switch to a scythe ashura or other tower style cooler.

You could always change the thermal compound on the gpu or change to a aftermarket cooler.

Some CPUs/GPUs can push further than others due to internal quality. There's a point where parts cannot push further without spending insane amounts of money or doing arbitrary mods.

I would drop the FSB speed back and adjust the multiplier only, HT bus 2200 if allowed to run otherwise set to 2400.
1. Sadly I know, but this will be enough for now. About VRM cooling and etc, doesn't need (i'm always hitting silicon lottery xd) + GPU temps are fine, i just want higher oc if the temps are good, but i guess the chip limits me
2. HTLink is 2730MHz and NB is 2100, something else?

To cut power to the USB devices when the PC is off, look for a USBPWR jumper in the motherboard and change it's position. It's usually at the top left corner, near the CPU 12v input, but it's sometimes near the first PCI-E 16x slot.
1181MHz in a 7750? WTF? Mine yesterday decided it doesn't like the 935MHz OC it had for years...//Nevermind, bad RAM overclock, back to 935MHz.
Yeap, stable OC for gaming. 1182 and 1302 with MAXIMUM 60-65C while gaming :D sadly, my old, bricked GPU AMD HD 6670 had artifacts even on stock freq, but if I somehow boot whit iGPU i will reflash bios and try to OC afaik (if i kill him np :D, already "dead")

by plugging your monitor to the motherboard...........pretty sure that works

View attachment 96259
Nope, tried and whit the GPU plugged in doesn't show anything to the screen :(
 
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eidairaman1

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#7
Adjust your Fsb back to stock and anything ht related back down. Use the multiplier to clock
 
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#8
Adjust your Fsb back to stock and anything ht related back down. Use the multiplier to clock
Can you give me an example please ? If you want i can give you NOW an exact photo of CPU-Z so you can give a better recommandation.
 
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eidairaman1

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#9
Can you give me an example please ? If you want i can give you NOW an exact photo of CPU-Z so you can give a better recommandation.
Look at my signature below

It's a cpu-z validation shot, that's how my rig has been running since 2016. HT is only adjusted when ram is running hard, when I set mine for 2400 the HT bus had to be the same, otherwise keep it low.
 
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#10
Untitled.png


Soo, little help with the OC ? (proof of the HD 7750 oc) What to decrease, what to increase etc (core speed multiplier bus speed htlink nb freq etc)
 

eidairaman1

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#11
Ok I told you before, this is the last time I will tell you, then you are on your own.

1. Drop your bus Speed.

2 Drop Your HT Link to 2200.

3 Bump your multiplier up.

Use MSI afterburner to oc your gpu.
 
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#12
Ok I told you before, this is the last time I will tell you, then you are on your own.

1. Drop your bus Speed.

2 Drop Your HT Link to 2200.

3 Bump your multiplier up.

Use MSI afterburner to oc your gpu.
I did it, Bus Speed to 200, htlink to 2200 and multiplier to 21.5, still 4.3GHz but -10C, now I have 60C instead of 70C. But why is the HTLink and NB freq ? Shouldn't OC that too ? ram speed is now lower, but i don't really care, I have 1866 MHz. GPU OC is now worst, i downlocked 2 MHz to be stable :D

Sooo, i just want lower latency, and higher GPU OC if possible (idk if some mb/cpu tweaks can help) for playing esport games...Is there any tweak?
 
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eidairaman1

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#13
@Mr.Scott, isn't there a means of upping voltage or peg slot frequencies?

At op is that the maximum your multiplier goes? Or can it go further?

To drop the cpu temps down further get a Scythe Ashura or better cooler that will fit your case.

For your ram, look at makers site for your specific ram and then look at the others from same company in that line that have higher clocks and tightest timings possible, don't forget to write down all those values to include voltage.

Your motherboard should have a means of adjusting ram clock without touching the fsb or nb link.

If it does set your ram to 2133 with applicable timings and voltage, if stable test it in games, then bump to 2400, do the same again.

Read your manual
 
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#14
CPU-NB is the memory and L3 caché controller, overclocking it helps, but it's better to do that after being sure the CPU overclock is stable.
HT Link is the connection between chipset and components, you should not overclock it, since it doesn't help at all (at stock is more than enough) and it can easily make the PC unstable, pro overcockers on LN2 even lower it.