GA-EP45-UD3P memory type ddr2 1000

[pectin]

Looking to get the q9550 and the following:

GA-EP45-UD3P supports up to DDR2 1333
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1000 (PC2 8000) Dual Channel

will the G Skill work well or do I need to up the voltage on this one to oc yo to 3.6?


Is a DDR2 800 better for overclocking than the DDR 1000 or should I get an even faster DDR 1200?? do advise gurus!!

 

[Denithor]

DDR2-1000 runs at up to an fsb of 500mhz. So your Q9550 will be able to hit 4.25GHz without having to overclock the memory.

Plenty of headroom, no need for DDR2-1200.

 

[Drsignguy]

Just so you are aware, Gigabyte doesn't mention the support of GSkill in my EP45 (in sig) but it does work without any problems. Just make sure you have the latest bios for your board.

As for your Goal OC of 3.6, your Q9550 has a multi of 8.5. So to get 3.6 you would need to have 425 FSB. 425x2=850 @ 1:1 ratio. By increasing the ratio, you will increase the speed of your ram while keeping your current OC of 3.6 all of which isn't a problem with this Ram. You have plenty of headroom to get it up to speed And it overclocks well too. There are other ways also. By lowering the multi, you can raise the FSB to increase speed with your ram while leaving the ratio at 1:1.

To answer your question of will it work well, Yes it will. I wanted the 1000Mhz over the 800Mhz so I wouldn't have to stress the Ram as much and gained headroom for have my OC of 3.4 with my Q9450(8x multi)


Examples of ratios: If OC is 3.6 with multi @ 8.5 = 425FSB (8.5 x 425= 3612.5)

1:1 = 425 x 2=850 Mhz
2:3 = 638 x 2=1276 Mhz
4:5 = 531 x 2=1062 Mhz
5:6 = 510 x 2=1020 Mhz

 

[pectin]

I saw another one which was a G Skill and another OCZ Reaper DDR 1200 I think??.... would a DDR2 1200 then in 'theory' allow me to run it at at least close to 1200 or should I just stay at ddr2 1000? Thanks

 

[Drsignguy]

Depends on price. IF you can get (1200) for the same price, then go ahead but you really only need the (1000). As Denithor mentioned, hitting 500FSB gives you the stock speed of your Ram and thats at 1:1. You have plenty of room. and like I said earlier, It overclocks well too...

 

[pectin]

In your opinions.... it now boils down to which is the more compatible or better memory... price wise strangely has gone down so much in 20-30 for a pretty good high one one compared to what I paid 3-4 yrs ago. Times have changed... maybe due to the fix fixing lawsuit that samsung and several others were indicted not long ago... I got a letter from the US Govt if bought any memory from several of these manufacturers. Is OCZ Reaper, Kingston HPX, Mushkin, G Skill better? I am kinda lost in there.... everyone say something different.

 

[Denithor]

These days I stick to Mushkin, G.Skill and Crucial memory. I've personally had problems with Corsair, Kingston and OCZ memory and see them as lower quality.

Just make sure to get memory rated to run at 1.8V and you should be fine (that's where OCZ trips up, their memory often requires 2.0V or higher and many motherboards just won't boot with their sticks until the voltage is upped in the BIOS - leaving you out of luck if you don't have any other sticks available).

 

[DSF]

Originally posted by: pectin
I saw another one which was a G Skill and another OCZ Reaper DDR 1200 I think??.... would a DDR2 1200 then in 'theory' allow me to run it at at least close to 1200 or should I just stay at ddr2 1000? Thanks

Your motherboard is unlikely to go above a 500MHz FSB, making anything over DDR2-1000 essentially meaningless. There are niche exceptions, but for 99% of people there's no reason for anything faster than DDR2-1000.

 

[taltamir]

1200 > 1000 > 800... it is not very difficult
BUT, depending on the CPU it might not even be needed to have anything "faster" at all. you can lower the memory multiplier and increase the basic FSB to, for example, OC a 2.4ghz Q6600 to 3ghz while keeping the DDR2-800 running at 800 mhz with no OC at all... but if you wanted to OC your Q6600 ABOVE 3ghz, then you would have to start OCing the ram. (at which case a 1000 or 1200 rated ram would be useful)

 

[pectin]

there is a GSkill ddr2 1066 now on newegg pre-thanksgiving sale.. is that good for the GA-EP45-UD3P ?

 

[JustStarting]

DDR-800 is likely fine if you get D9 chips (I have 2 sets of G.Skill HZ's (D9's) 2 x 1gb sets for sale)- My G.Skills. I have run mine to DDR-1010 no sweat before my board would give up the ghost running 1:1.

DDR-1000 is great- just don't overpay for what you won't need. Like a previous poster said..... you'll be limited by your cpu OC due to your multiplier and FSB. Your memory does not have to run 1:1 for great performance.

Get some DDR-800 or DDR-1000 and use a multiplier if you HAVE to. You probably won't.

Hard to beat the 2 x 2gb G.Skill PI's....

http://www.newegg.com/Product/...x?Item=N82E16820231209

Plenty of people getting DDR-900+. With a 8.5 multiplier the PI's could likely get you to 3825mhz which I doubt you Q9550 could handle without some serios voltage or elaborate cooling. Anything over 3.6 is a gift for a quad.

8.5 x 450fsb= 3825mhz> outstanding OC!!
8.5 x 425fsb= 3612mhz> (I'd be happy with a quad OC)

Moral of the story..... DDR-800 will get you there just fine with that multiplier

 

[Dadofamunky]

Originally posted by: pectin
there is a GSkill ddr2 1066 now on newegg pre-thanksgiving sale.. is that good for the GA-EP45-UD3P ?

I'd take that kit over DDR2-1000.

 

[JustStarting]

The 1066's are OK... rated at 5-5-5-15 @ 2.0- 2.1v. If you'll never need it (ie... won't hit 500+ FSB) why spend the extra $10?? Your Q9550 probably won't see 500fsb with your multiplier and probably not even if you drop it to 7x.

Get the PI's which are DDR-800 rated 4-4-4-12 @ 1.8- 1.9v and do DDR-900 no problem at those timings and voltage.

Did you check out Tweaktown yet? Get all your answers there from Gigabyte tech support..... PM LSDmeasap.

 

[lingenfr]

Newegg is listing 900 G.Skill for the same price as 800. Any reason not to go for it?

 

[DSF]

Originally posted by: lingenfr
Newegg is listing 900 G.Skill for the same price as 800. Any reason not to go for it?

Not really. It's probably the same chips inside anyway.

Edit: I should say, no problem as long as you're comfortable manually setting voltages and such.

 

[lingenfr]

Why would I need to manually set voltages? I am not planning on overclocking. Won't they be recognized and configured by the bios?

 

[18 Is Number 1]

Originally posted by: DSF

Originally posted by: lingenfr
Newegg is listing 900 G.Skill for the same price as 800. Any reason not to go for it?

Not really. It's probably the same chips inside anyway.

800 is Powerchip and won't OC very far.
900 is Qimonda and suck at cas5 (like barely over 1000MHz).
GSkill bins very tightly. Buy the speed you need if you choose them.