Memory Benchmarks
The jump to 250MHz dHTT is all about the memory interface with current Athlon FX. You natively support 250MHz memory (DDR500), some 25% faster than the current standard. Memory access latency therefore should drop and you've got more memory bandwidth available.HEXUS Pifast
Pifast is the first proof of an enhanced memory subsystem buying you performance, even with DRAMs running at higher internal latencies. There's up to 10% extra performance to be seen in the jump to 250MHz dHTT with performance also scaling linearly as the CPU frequency increases. Sub 40 seconds is a HEXUS personal best in terms of printed results.
ScienceMark - Measured memory bandwidth
Pardoning the dips where the half multiplier affects things, there's over 1GB/sec extra buffered memory bandwidth to be had from the FX-55's memory controller running the memory at 250MHz. Around 88% efficiency is seen at all times. If you're memory bandwidth bound, the benefits to running a faster memory clock are obvious.
ScienceMark - Measured memory latency
Latency drops some 10%, barring the half-multi anomalies. Combined with the rough 20% increase in memory bandwidth and the memory subsystem receives a boost across the board, at all CPU frequencies.
