Faster RAM
Faster RAM
I remember Vlad always suggesting not better CPU but faster RAM.
I tested my RAM with some benchmarks and it compared well with others on the list including very expensive ones. Here are my results
I can only use 5 of the cores of my cpu now before speed stops increasing. But this benchmark shows my RAM can read and write 6 GB/s so is this not fast enough? I mean PER SECOND? For NV to benefit from the speed of all my cpu threads what kind of RAM does it need?
To denoise lets say a 240p video using all 8 cores, how many GB/s must my RAM be?
I tested my RAM with some benchmarks and it compared well with others on the list including very expensive ones. Here are my results
I can only use 5 of the cores of my cpu now before speed stops increasing. But this benchmark shows my RAM can read and write 6 GB/s so is this not fast enough? I mean PER SECOND? For NV to benefit from the speed of all my cpu threads what kind of RAM does it need?
To denoise lets say a 240p video using all 8 cores, how many GB/s must my RAM be?
> But you said RAM is my bottleneck
I remember saying the following:
I remember saying the following:
Vlad> More cores will not always means more speed even on a multi-threaded program.
Agreed. Possible reasons of that are many. One of them, significant for large frames, is the limited memory bandwidth. Modern multi-core CPUs can process data faster than the memory system can deliver that data to the CPU.
Cache size is important too. If fewer cores do the work then they can use larger portions of the shared cache memory, which speeds up memory operations for those active cores. But fewer cores also means lower overall computing speed. These two tendencies compete with each other and as a result the highest speed is achieved somewhere in the middle. Generally faster memory can change the optimum. Larger cache size of the CPU can change it too. Which is why it is important to use a fast RAM and a high-end CPU with large cache memory.