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Do intel cpu's not support ddr3 1600 memory?

post #1 of 11
Thread Starter 
I really haven't seen many around with a 2500k and ddr3 1600 memory. Always 1333, also on computer configuration websites they don't even give you an option for ddr3 1600 when you choose an intel desktop.
post #2 of 11
Well not natively. Thats what overclocking is for. Once you raise the FSB, you raise the ram clock. So if you overclock it, then you can get to 1600, or even higher.
    
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post #3 of 11
Thread Starter 
There's an fsb for intel cpus? I thought it was a Bclck or something like that and that it starts at 100 and if you barely move it it'll cause great instability which is why for 2500k's and 2600k's the multiplier is all you need to OC.
post #4 of 11
I have 1600 mhz ram and it showed it as 1333mhz but on my motherboard all i had to do was change the target dram frequency, it was that simple
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post #5 of 11
Thread Starter 
Ah i see i had to do the same thing with my amd cpu, just changed the multiplier to 8x and fixed the ram timings to the rated ones and all worked fine.
post #6 of 11
FSB and bclk are the same thing in my experience.
    
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post #7 of 11
Just check my rig right here.

Intel i5 2500K SandyBridge @ 4.8Ghz with 8GB (2x4GB) of Corsair Vengeance running at 1600MHz 9-9-9-24 1.5v

proof.gif - http://valid.canardpc.com/show_oc.php?id=1799917


And here's a 5Ghz run, CPU-Z stuffed and though it was a dual though, weird. - http://valid.canardpc.com/show_oc.php?id=1791295
Edited by AUS.R34P3R - 5/4/11 at 9:37pm
 
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post #8 of 11
Quote:
Originally Posted by Willanhanyard;13386906 
FSB and bclk are the same thing in my experience.
They completely different technically.

FSB is a system interconnect. BCLK is just a clock generator.
Once again...
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post #9 of 11
lol my outdated q9550 supports ddr3 1600.

running it at 1800mhz.
post #10 of 11
Yes, Sandy Bridge boards fully support DDR3-1600.

The speeds I have available for STOCK clocks on memory:
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
DDR3-1867
DDR3-2133
DDR3-2400

Plus you can of course mess with the BCLK as well. But with Sandy Bridge its GENERALLY +/- 5MHz. I can't get stable past 105.5MHz BCLK, and I can't even POST under 95MHz at all.
Quote:
Originally Posted by Willanhanyard;13386812 
Well not natively. Thats what overclocking is for. Once you raise the FSB, you raise the ram clock. So if you overclock it, then you can get to 1600, or even higher.
Quote:
Originally Posted by Willanhanyard;13386906 
FSB and bclk are the same thing in my experience.

doh.gif Sandy Bridge natively supports almost all DDR3 speeds that are out (only one that's missing is DDR3-2000). And no, you do NOT raise the "FSB" seeing as how there isn't one. And you don't want to raise the BCLK either unless you know what you're doing and are willing to make that risk.
Quote:
Originally Posted by DuckieHo;13386975 
They completely different technically.

FSB is a system interconnect. BCLK is just a clock generator.

I believe with Sandy Bridge, the BCLK has turned into a full system interconnect now (please correct me if I'm wrong). Since the SATA, audio, PCIe lanes, PCI lanes, ethernet...EVERYTHING is tied to the BCLK. Which is why its so sensitive to adjustment.
Quote:
Originally Posted by vspec;13387553 
lol my outdated q9550 supports ddr3 1600.

running it at 1800mhz.

Actually, believe it or not, your Q9550 has nothing to do with what RAM you use. LGA775, the memory controller is on the motherboard. So swapping motherboards is what would allow DDR2 or DDR3 on LGA775. With anything newer than LGA775 though, the memory controller is on the CPU, which is why memory performance is a lot faster with newer CPU's.
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