Comprehensive Overclocking?

Due to some very subpar performance with the newer games that have been out recently I've been looking into maybe overclocking my JH-B1 a little bit. However I am extremely newb when it comes to this kind of thing and the last thing I want to do is brick my machine.

I have seen the overclock guide for the JW version with the Nvidea card. And I was wondering if there is something similar for the HD 5870.

Much thanks!

 

You can use chastity's vBios to unlock the overdrive function or the AMD GPU clock tool. Most cards take an overclock to 800/1100MHz (core/memory) very well. However, the max OC is always different per GPU, for instance, my 5870's core can take 840MHz, but i can't push my memory past 1090MHz.

I'd say start from 750/1050 and incease by shots of 10MHz form there until you start getting artifacts or driver crashes just to be on the safe side. I don't think there is a dedicated guide, but the GPU is quite easy to OC.

 

you can pass the benchmarks at 840 but can you play couple of hourse graphic intense game ?

 

For GPU overclocking you want: ATI Overdrive (recommended), ATI Clock Tool or Afterburner also work from what I have used in the past. ATI overdrive accessed through the CCC facility has a clever facility to check for artifacts and makes sure that clock is stable enough to prevent them and then you can stress test it using Furmark and if it does not lock up/glitch/artifact after around 5-10 minutes you should be ok using those clocks. Overclocking is also dependent on the software as well some programs/games can still crash or cause the display driver to crash when overclocking.

I use 800/1100 but can handle 840/1135. Good to test and find what is stable and works best for you. Above 825/1100 I notice flickering in some games so I stick with what I have apart from when benchmarking.

For the CPU overclocking you want SETFSB and if you have the 740QM you might be able to get away with the free settings here otherwise it might be an idea to pay the donation and get the JH settings for the 720QM like I did its only $8-$10 I believe now. With this you can simply raise the PLL and test every couple of mhz by using something like Prime 95 to make sure it does not lock up or BSOD.

Also have a read through this and apply this fix if you plan to o/c the CPU as Windows 7 has an adverse effect which needs correcting with a simple timing fix applied through DOS prompt using administrator settings.

Both overclocks are limited by voltage and thanks to Asus it would appear because of hardwiring these cannot be changed so as long as you have good temps at the moment or good paste you wont really need to worry about the small increase in temperature, but use HWINFO to make sure everything is running as it should by using the sensors. Also every chip is different so do not expect to reach what others have or expect to reach more, as Tijo has explained on another recent overclocking post that chips are put through certain tests to make sure they can handle the stock clocks, voltage, watts, etc and if they pass the tests they are allowed into the OEM production world, they do not necessarily test for the chip to reach the sort of output we aim for which in my case is excessive and im nearing the point of attaching a car battery to the GPU/CPU

As always overclock at your own risk.

 

Unfortunately, no. I don't crash or anything but i end up having a flickering screen once in a while. Still playable though.