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So why did they choose GDDR then?

• valarauca1 10y ago
  I'm not Sony Engineering so IDFK GDDR5 trades latency for thoughtput XboxONE DDR3: 68GB/s CAS 7 PS4: GDDR5: 127GB/s CAS 15 The reason GDDR is normally used in GPU's is the workloads are more predictive, you are doing the same calculation thousands of times, just iterating across a buffer. This is why SIMD/Cache prefetching shine in GPU's. It makes memory latency not as important.
  • Keyframe 10y ago
    So, you're saying GDDR is more geared towards operations done commonly in graphics? ;)
    • valarauca1 10y ago
      No. I'm saying it is gear to work loads with easily predictable or cache-able memory access patterns.