Captain_Tom said:
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Exactly what I was thinking. People act like DDR3 was cheaper, but in the long run it could easily end up costing more. Especially since they tried to make up for it with costly ESRAM...
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There s a real possibility MS will be able to use DDR4 later in X1 cycle. If their controller is designed to support it and it's very likely it will. There s not much difference between the two standards and the DDR3 they picked is precisely where the DDR4 begins (2133 Mhz)
As for the old debate about latency. X360 never had problem using GDDR3 for its CPU. The whole thing is some kind of urban legend, GDDR latency are really good, in fact GDDR memory are just better memory chips overhaul (that comes with a price), they arent behind in latencies they are just way ahead in base cock and effective bw (cause of the x4 multi).
In PC CPU benchmarks, BW always wins over latency, if you increase the speed of your memory, you increase bandwidth and gain fps, even if you have to loosen the timings. GTA memory benchmarks are a good example
Even if you go from 1600mhz at 7-7-7-19 to 1866 at slower timings 9-9-9-24 you gain fps from the CPU side of things, so now let's imagine going from 2133 Mhz to 5500 Mhz, with equal or even worse timings..it's still gonna be faster. Modern CPU are also highly parrallel in multi core configuration, timings are becoming less and less important, like on the gpu side, BW is everything.
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OMG thank you again! It has been proven many times that higher bandwidth trumps lower latency by a considerable amount. This latency advantage is like most other things MS has been saying: BS.
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You do realize XBO has MASSIVELY more peak bandwidth than PS4, right? 272 GB/s for XBO vs 176 GB/s for PS4. It's actually over double on a per FLOP basis.
You aren't seriously simply using the DDR3 and pretending the ESRAM doesn't exist?
If that's what people are generally doing, then wow, Sony has really pulled the wool over people's eyes.
