You may experience some increase in performance but it's not really worth it. A few Mhz increase can ease out the stutters. For example, if you were playing a game and it lags a bit, not much but every so often when things hot up, it may pay but if it stutters non stop, it's best to forgo it and get a new card. when i mean non stop, i mean 20FPS or under. but be warned. i thought i'd OC my card and in the end, i've fried it up. be very carefull! OCing is usually only for bragging rights and those who want to push their system to the limit for a lot of tinkering. Maybe if you're lucky and you have a recent ASUS card, you can do AI NOS but other than that, it's all up to you. So my advice is to get a new card if you want top FPS, turn down the detail or OC it a few MHz. mainly OC the GPU, 5Mhz is a lot in gfx terms, 10 is getting quite up there, 15+ if you have deep pockets and a brave heart. but to that, i've seen XFX factory OC their 7800 by 60MHz GPU using the same cooler so there is room to push but i recommend 5Mhz, then 1Mhz up every time until you're happy, or too high and you're sad like me when i blew mine out of the water.
Your memory shouldn't need musch OCing, it mainly helps the transfer of data between to GPU and CPU, RAM etc. best to OC you GPU. If you're wanting to do extreme OC, it may pay to get another HFS, Zalman make good ones or you can get water cooling but for me, water and electricity never mix well. i've never experienced lag because of memory, it's mainly the GPU being unable to cope with the pixel requirements
to find out how many pixels your gfx card can out put, multiple MHz by pixelpipe lines
eg. 7800CGTX is standard clocked at 430Mhz with 24 pixelpipe line so pixel out put is
430 x 24 =10320 mega pixels or 10.32 gigapixels, 10,320,000,000 pixels
if you OC it to 450Mhz then
450 x 24 = 10.8 gigapixels, enough to smooth out a frame or two but not enough for big hits
Edited by Hammm, 30 January 2006 - 02:25 AM.