Maxing out on GTX 1060 3Gb, more RAM needed???

InvalidError

Titan
Moderator
As above, many modern games require at least 4GB of VRAM if you want to turn up eye-candy. I recently bought FFXV on Steam sale and it already gobbles up the better part of 4GB of VRAM even at low-average details. Not going to be maxing that out with less than 6GB, maybe even 8GB.
 

InvalidError

Titan
Moderator

System memory has about 1/5th as much bandwidth and ~10X higher latency than local VRAM due to having to cross the PCIe bus and compete with the CPU for system memory access. The performance degradation can be massive when frequently used data ends up overflowing to system memory.
 
Mar 16, 2018
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InvalidError

Titan
Moderator

Yes and no: yes, the GPU can borrow system RAM to handle larger workloads than what its local frame buffer can handle. However, this comes at a potentially massive performance loss due to much lower bandwidth and much higher latency. You may have tons of GPU-power available but large chunks of it become untappable because they're starving on RAM/VRAM.

This is a lot like using a swapfile when you run out of system RAM. It stops the OS from outright crashing programs when they try to allocate more RAM than what is physically available at the expense of a massive (50-99%) performance loss when this happens too often.

Short version: it works but ain't no substitute.
 
Mar 16, 2018
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I saw the video when it exceeds limit of 3Gb VRam but it was almost using 10Gb Ram while gaming instead of 8Gb, cuz game was using almost 8Gb ram when it was not exceeding 3Gb VRam, I hope its a solution then ;D