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Is this Ram good for OC'ing?

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July 20, 2007 11:04:50 AM

Hi,

Right now i've got Kingston ddr800, single stick 1GB@ 5-5-5-15, 2.0v
Ive overclocked my Core 2 E6300 to 3.0Ghz (7*430) but it also overclocked my memory to 860mhz which booted stable but generated errors during testing.

Now i believe it doesn't OC much because of the default timings of 5-5-5-15 (Crappy memory). I'm currently running that RAM not overclocked, i had to drop to 7*400 so the memory is running@ 800mhz. This gives me a cpu overclock of 2.8Ghz stable.

Im looking at upgrading my memory to:
Corsair TWIN2X2048-6400C4 2GB (2x XMS2 1GB) PC-6400 (800MHz) DDR2 RAM, 2x240-pin DIMMs, Non ECC Unbuffered, 4-4-4-12

Now with the 4-4-4-12 timings i believe it should run 1:1 and overclock up to 100mhz(DDR900mhz) with not much issues. I only need it to run stable at DDR860.

Should it be ok with those settings? Is DDR2 4-4-4-12 really capable of up to 100mhz stable OC?

Thanks.

More about : ram good ing

July 20, 2007 1:21:44 PM

look at g skill 6400 hz's. they are capable of reaching 1200,ghz @ 5-5-5-15. im running mine atm @ 950 4-4-4-10
July 20, 2007 3:46:52 PM

I used Corsair DDR675 RAM in an e6300 that I overclocked to 3.01ghz (7*430). Set timings at 5-4-5-12. This is not even with DDR800 RAM and it's running at 860mhz. I'm sure the DDR800 RAM could run very close to default timings at 860mhz. Personally, I wouldn't spend 80-100 bucks to get slightly better RAM timings equating to a 1 to 2% performance gain at the same speed. Sure, it may allow you to take the CPU to 3.2 or so, but is the small difference in performance due to slightly tighter timings or 200mhz in cpu clock speed going to be worth the added cost? Only you can decide.
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July 20, 2007 3:47:48 PM

Flasher said:
Hi,

Right now i've got Kingston ddr800, single stick 1GB@ 5-5-5-15, 2.0v
Ive overclocked my Core 2 E6300 to 3.0Ghz (7*430) but it also overclocked my memory to 860mhz which booted stable but generated errors during testing.

Now i believe it doesn't OC much because of the default timings of 5-5-5-15 (Crappy memory). I'm currently running that RAM not overclocked, i had to drop to 7*400 so the memory is running@ 800mhz. This gives me a cpu overclock of 2.8Ghz stable.


E6300 1.86GHz..... you OC'ed stable up to 2.8GHz. That's 1GHz more which is great for a "Crappy" memory as you say. :-)

Anyway, probably you won't get a noticeable performance improvement if you can reach 3.2~3.4GHz, for the extra money you'll spend buying CL4 DDR2-800 memory.

Two more things:
- have you thought in installing some heat dissipators (copper if it's cheap) on those "crappy" Kingston memories? Probably you'll be able to reach about 3.0GHz...

- If your mobo allows it, you can drop the 1:1 relation and set lower timmings on your memories to get it stable with a higher cpu frequency. Remember you have a dual channel architecture which supplies 2x800MHz = 1600MHz for a cpu FSB of 1066MHz... anyone please correct me if this makes no sense or it's not correct! Thanks.

July 21, 2007 9:27:03 AM

Thanks for the replies.

Now what i meant by it doesnt overclock very well, i meant the memory module, the cpu is fine.

The reason i thought of getting the Corsair memory is that currently i anly have one 1gb stick in one slot. I want 2gb in total. A new matching stick of kingston will cost me AU$100, i thought i may as well spend another AU$100 on top of that and get two quality 1GB sticks that can overclock better.

The current 'crappy' :)  ram is not overclocked at all. Its running at 800mhz which it is rated at. 7*400~2.8ghz all in sync, memory not overclocked.

I can sell the old Kingston stick for at least $AU50, so thet means to replace the existing stick it would cost me $50, and an additional 1GB of quality ram will cost me $100.

So in summary i have the option of matching up the existing stick with another 1GB@5-5-5-15 for $100 or get 2GB of quality Corsair 4-4-4-12 ram for $200.

Which would you choose?

TurdBurglar:
Which timings would you use for ddr2 800mhz 5-5-5-15, >>>>>> 5,6,6,16 or 6,6,6,18 or something?
July 21, 2007 9:36:55 AM

The corsair should reach ddr860, at worst you'll just have to slacken the timings a bit. There is however far better memory available for the same or less money in the UK and US.... not sure about AUS prices. Some kits that will definitely reach that slight overclock are:

G Skill PC6400 HZ 4-4-4-12
G Skill PC6400 HK 4-4-3-5
Crucial Ballistix PC6400 4-4-4-12
Crucial Ballistix PC5300 3-3-3-12
July 21, 2007 9:45:20 AM

Thanks for that GSte

Cheapest i could find:( AU$)
G Skill PC6400 HZ 4-4-4-12 $249
G Skill PC6400 HK 4-4-3-5 $360
Crucial Ballistix PC6400 4-4-4-12 $229
Crucial Ballistix PC5300 3-3-3-12 $199

That last one is DDR667, u sure it would reach 860mhz?

Thanks.

July 21, 2007 10:48:21 AM

Definately, you would have to loosen the timings to 4-4-4-12 though.
!