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DDR2 1066 or DDR2 800?

Pokeguylow

Member
Joined
Apr 22, 2009
Messages
23
Location
Vancouver, B.C., Canada
Hi, Im just wondering is there a big difference between DDR2 800 (Timing: 4-4-4-12) and DDR2 1066 (5-5-5-15)? Im planning to get 8gb.


CPU - AMD phenom II 940 BE
MoBO - GA-MA790X-UD4P
VideoCard - Sapphire ATI 4870
 

enaberif

Well-known member
Joined
Dec 9, 2006
Messages
11,391
Location
Calgahree, AB
Hi, Im just wondering is there a big difference between DDR2 800 (Timing: 4-4-4-12) and DDR2 1066 (5-5-5-15)? Im planning to get 8gb.


CPU - AMD phenom II 940 BE
MoBO - GA-MA790X-UD4P
VideoCard - Sapphire ATI 4870
Do you REALLY need 8gb?

You may want to give some detail into why.
 

MpG

Well-known member
Joined
Aug 2, 2007
Messages
3,132
Location
Kitchener, ON
Agreed, but just for the record, you can't say for sure which is faster in a given situation without actually trying it out. Some applications make the most out of tight timings and/or speeds, while others can easily be indifferent to one or the other. But if you're running a server, more than a few boards have trouble pushing four dimms at 1066Mhz, so 800Mhz is definitely the way to go in this case.
 

Eagle Eye

Well-known member
Joined
Dec 27, 2007
Messages
2,045
Location
Kleinburg, ON
Doesn't DDR800 @ Cas 4 performs just as fast as DDR 1066 @ Cas 5?

Unless things have changed most don't overclock their ram on AMD platforms, I know I didn't back in the day.

Regards,

EE
 
Last edited:

MpG

Well-known member
Joined
Aug 2, 2007
Messages
3,132
Location
Kitchener, ON
As I understand it - and I stand to be corrected on this - while the main memory latencies are basically similar, there are still a large number of other factors involved in moving info between the memory and the CPU, such as chipset latencies. This is one of the reasons why the i7 platform's memory performance is so high, even with high latency, 'slower' memory sticks.
 

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