Originally Posted by Zero4549
Those capture cards you were discussing a couple pages ago almost 100% remove any performance penalty for recording. That is the entire point of the card - it has dedicated hardware for recording, encoding, and post-process effects. They also have the benefit that they will capture you gou's output exactly, so there is no conflict with certain rendering methods which often happens with software recorders.
The downside to those cards is they're expensive, take up a pci slot, often have shoddy drivers, and have very strict maximum resolution and frame rate limits (this is in order to ensure that they will be capable of keeping up with you in real-time).
The reason shadowplay is so cool is that apparently kepler GPUs already have some dedicated hardware for this purpose. You can think of it as having a partial recording card built into the gpu. It should in theory have many benefits over dedicated recording cards, but that will come down to implementation. On the down side, it will have some performance hit (although it should be a lot less than software recorders).
As for MSI Afterburner, it is probably the BEST software recorder for low performance hit. It is also a great tool for overclocking GPUs, and
monitoring info via OSD or logitech LCDs, so everyone here at overclock
.net should probably have it anyway.
That said, as any software recorder, it has to borrow power from your system ram and CPU. That means you have less for your games. They also have to tie into your video output, which can impact your gpu performance to varying degrees. Afterburner is very good about this, probably because they already have low-level access to the GPU for all the gpu overclocking and OSD features.
At any rate, you mentioned that you were getting poor performance while using afterburner. It definitely has a CPU hit, so if your cpu is maxed out in games where you see the hit, that is the issue. If you want to minimise the performance hit, you should be recording uncompressed full frame with gamma correction disabled and at an even frame rate ratio to your monitor refresh rate. This will result in the least amount of processing, and thus the least demand on system resources. It will also produce the best quality recordings. It will however create huge
files that will absolutely need
to be re-encoded before being uploaded anywhere, but that shouldn't be a problem since you are editing the videos anyway.
Hopefully that clears stuff up a little.
Now we can only sit back and wait for Shadowplay. In the mean time, who want's to gift me sony vegas?