Originally Posted by mahanddeem
Hello guys, questions pleaee:
1. Artifacts when ocing gpu, problem of core or vram?
2. Does more voltage cure artifacts?
3. Does increasing voltage helps better vram oc from 7 to 8gps? Or it only helps core oc?
4. Why GTA V artifact more than other games? scientific answer please. "...pushes hardware too much..." Isn't a scientific answer.
Stock or MOD BIOS?
(1) Could be either as artifacts were not described. Simple test, repeat with same GPU overclock but with memory @ stock. Some times artifacts can be caused by poor contact between GPU and cooler (the factory doesn't always get everything perfect) and/or poor contact with VRMs and memory chips. Sometimes removing the cooler and replacing thermal compound and heat transfer pads with upgraded ones can help. Other times it is just a bad GPU and needs to be replaced (like one of mine I had to return).
(2) It has a relationship but indirect instead of direct. There is no single answer that applies universally to all GPUs. Increased voltage can/will increase heat on both GPUs and VRMs which could create a condition where the artifacts are more prone to occur. On the other hand increasing the voltage could possibly remove artifacts if they were caused by insufficient voltage but I wouldn't say this is common and probably a very rare occurrence. The artifacts are 98% of the time because of an overclock that the GPU cannot handle. It is then up to us as a consumer to determine if that maximum stable overclock falls into the "defective GPU' category (obviously if you cannot even overclock to what a reference GPU could do on average for example then why did you pay extra for the premium PCB). If you have artifacts you are pretty much limited to the overclock where they do not occur any more and settle with that, attempt to correct a factory thermal application/contact issue or replace the GPU. My GPU that I had replaced was producing artifacts very easily and was clearly defective (I was getting them at less than 1430Mhz). The replacement doesn't produce ANY at all and the GPU will just TDR when pushed too hard.
(3) It has no effect at all on overclocking ram. Ram voltage is controlled independently and only few GPUs even offer memory voltage adjustment (MSI Lightning). From what I understand adjusting the memory voltage is pointless anyway. MOST people can run 8Ghz memory (effective) with no issue.. Some are pushing to 8.5Ghz and 9Ghz+ all on stock memory voltage. I don't think you would gain anything other than bragging rights of being able to adjust memory voltage
(4) Because it scientifically pushes your GPU harder.. It's next gen...
Shaders are more complex, textures are higher res and larger size, more complex graphics are programmes, higher detail, more polygons and other features like Physx, Gameworks techs, ambient occlusion, PCSS shadows.. the list goes one.. Older titles just don't have the technical capabilities in the game engine that next gen titles do. Look at the difference between The Witcher 2 and the Witcher 3...
PS. If you want to find out what your stable GPU overclock is, run FFXIV free benchmark with MAXIMUM settings @ 4k resolution (or DSR 4x) and you'll most likely have to lower your overclock a little to pass that test. It's next-gen that isn't no firestrike test