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RAM Speed Question

Last response: in Memory
August 30, 2007 11:13:28 PM

Hey guys, i'm planning on building a computer and here is the preliminary spec.

Intel Core 2 Duo E6750 S775 2.66ghz 4mb Cache 1333FSB
OCZ 2GB (2x1GB) DDR2 1066MHz/PC2-8500 (OCZ2N1066SR2GK) Dual Channel SLI Ready Edition
Asus P5K Deluxe WiFi Intel P35 (Socket 775) PCI-Express DDR2 Motherboard
BFG GeForce 8800 GTS OC 640MB GDDR3 HDTV/Dual DVI (PCI-Express) - Retail
Hiper Black 730W PSU - EPS12V v2.91, 100-240V Auto Switch, 24+4+8+(4X6)
Thermaltake Tsunami Aluminium Black Case with Window - No PSU
Samsung SH-S203B 20X DVD±RW/RAM / DL Serial ATA Black Bare Drive
Samsung SpinPoint T HD321KJ 320GB SATA-II 16MB Cache

I already plan on changing the HDD and PSU. But i have a question

The above ram is PC2-8500 running at 1066mhz with latency 5-5-5-15. I was wondering, would it be better/worse/simliar to run 800mhz PC-6400 ram with 4-3-3-15 latency?

The reason i ask this is budget limitations, and the cheaper ram and nforce mobo is around £80 cheaper.

If it was to run worse, would it still be worth investing or should i just go for the 1066mhz stuff?


More about : ram speed question

August 31, 2007 12:31:06 AM

You wont notice any difference with 1066mhz RAM unless you OC the CPU.


OCZ Platinum Revision 2 2GB (2 x 1GB)

You can change the mobo too P5K-e Wifi for a cash saving with only loosing come copper and 2nd lan port $154

and a Corsair 520W would be enough to power the baby $124

Have you looked at possibly a Q6600 also, should be a bit more futureproofing for you.
August 31, 2007 1:08:32 AM

Might consider the 1066 because running DDR2-800 on a 1333 FSB, you will either be running it at 667 or 832 which is outside the spec for the ram. Most high quality ram should be able to handle the slight overclock just fine though.
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August 31, 2007 1:22:06 AM

Depends on how much you want to OC your CPU.

There are folks who say they are running Chookman's memory at DD2-900 which will let you OC the CPU to 3.6Ghz.

The CPU still has quite a bit more overhead than this which may be easier to get with the DDR2-1066, but 3.6Ghz may just be a nice resting spot for the CPU w/o trying to overdo an OC.
August 31, 2007 10:11:02 AM

If i do overclock it shouldn't be by much.

The thing is, the stick that is the 800mhz DDR2 runs at 4-3-3-15 latency on an nForce 680i only. On a P35 chip it runs at only 4-4-4-15. So would it be worth getting an nForce 680i board as well. Or just getting other ram?

Can anyone suggest other alternatives as well as the above?
a b } Memory
August 31, 2007 10:25:17 AM

get 680i if u want to have SLI , and go for SLI if u play @ 1920x1200 or higher , if u dont play @ that resolutions , then get a P35 board
August 31, 2007 10:35:01 AM

Thanks maziar, so its not worth getting the 4-3-3-15 ram and an nForce 680i board?

Also, if i dont overclock 800mhz 4-4-4-12/4-4-4-15 will run just as well as the 1066mhz 5-5-5-15?

But if i do overclock get the 1066mhz?

Also, for 800mhz would this be any good.
August 31, 2007 12:08:03 PM

Crucial Ballistix can do a wide range of timings & speeds. I can do 800MHz 3-3-3-8 @2.1v, 1000MHz 4-4-4-12 @2.1 or 1200MHz 5-5-5-15 @2.2v. The Crucial dimms are some of the best overclocking RAM out there.
August 31, 2007 2:01:17 PM

Okay thanks guys, ill probably go with the 800mhz stuff, and possibly upgrade to a quad core.

Ill either choose crucial ballistix or the OCZ platinum.

However, i'm still not sure whether a P35 or 680i board would be better. What do you think?
a b } Memory
August 31, 2007 3:40:27 PM

as i said get 680i if u sli and as i said get sli if u play @ 1920x1200 or higher ,if not save some money and get a nice p35 board like ASUS P5K, ASUS P5K-E , GIGABYTE P35 DS3R(they support only DDR2) or ASUS P5KC or GIGABYTE P35C DS3R (They support both DDR2 and DDR3 ,although DDR3 is limited to 4gb and these 2 boards dont OC as good as the others )
August 31, 2007 7:37:26 PM

Okay, so you're recommending a P35 board with 800mhz low latency ram over the 1066mhz?
a b } Memory
August 31, 2007 9:26:53 PM

yes as long as u dont OC much , (even though i have seen large OverClocks with good DDR2 800 rams )
August 31, 2007 10:23:06 PM

okay thanks. I think i MIGHT go with 1066mhz, but ill have a look at my prices.
September 2, 2007 1:47:45 PM


Which speed of RAM is good to upgrade ?

Specification of my PC:
Mother board : Gigabyte GA-945GCMX-S2
CPU : Core 2 Duo 6320
RAM: DDR2-667 Kingston ( 1G x 2 )
FSB:D RAM ratio = 4:5
Currently no Graphic Card installed.

Thanks in advance.
a b } Memory
September 2, 2007 4:44:37 PM

DDR2 800 or DDR2 1066 ,