are you saying that bandwidth does or doesnt scale with frequency now?sbohdan wrote:With the new Sandybridge platform all of the above is untrue. Here the higher the rated speed - the higher is the bandwidth. Even the timing has not much significance anymore. With 2133 memory I get 28GB/s in sandra, while 1600mhz would give me about 20-21GB/s, 1333 about 17GB/s. So you need to mark all of the above being related to core and earlier platforms.
Memory bandwidth tests... differences (PC5300 vs. PC8888)
Re: Memory bandwidth tests... differences (PC5300 vs. PC8888
-Austin
Screamin' BCLK:
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Screamin' BCLK:
775 System (Overclocking Platform): Q8400/Q8300/E8400/E7400/E7500 - GA-EP45-UD3R v1.1 - 4GB (2x2) OCZ Reaper HPC DDR2 1066 CL5 2.1v Corsair TX-750w
Gamer: Asrock Z77 Extreme4, i7 3770K @4.6GHz, ThermalTake Armor A90 modded, 2x4GB GSKILL RipjawsX DDR3 2133 CL9, Corsair HX-750w, MSI GTX660 Twin Frozr
Server2012: Q9300 - 8GB DDR2 - Asus P5QL Pro - Corsair CX430 - Mirrored 2TB Seagate's with 2TB WD cav for fileshare backups, 1TB WD for OS backups
Re: Memory bandwidth tests... differences (PC5300 vs. PC8888
I just said it aboveHere the higher the rated speed - the higher is the bandwidth.
Since the memory controller is on die, there is no northbridge to limit the FSB, so with Sandybridge and above, the faster the RAM is the higher the bandwith. Timing is not important - frequency is.
edit: just noticed this is an old question
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