Overclocking Kingston DDR3

[AMSA7]

Hi guys, after I clear my doubts regarding the number of memory modules that I can use with my Motherboard, I have another question.

I have now 4 modules of 2GB from Kingston. Kingston KVR1333D3S8N9/2G.

What I'd like to know is if I can overclock my CPU with those memories and how much can I expect to reach? The CPU here is E8400 and the Motherboard P3E3.

I can leave here the memory chips (if I wrote it right): Elpida J2 1(OR L) U8BCBG-DJ-F

Does anyone has this kind of memories and chips that could give me a tip?

Regards.

 

[jokyteddy]

Are you trying to overclock your CPU or your ram? I couldn't find much information on your P3E3 Motherboard, maybe you can share a link with us?

It's really hard to overclock Kingston ram especially when you have 4 modules of them. If you insist on overclocking them then you'll have to increase the latency which will actually decrease their real world performance. You won't see any visual difference going from 1333mhz to 1600mhz or even 1866mhz. You'll get higher benchmarking results but that's it.

In a nutshell, overclocking ram increases instability and does more harm then good.

 

[AMSA7]

Sorry, my mistake.

Motherboard: Asus P5E3.

About the overclocking, I was referring to the CPU. Of course, if you want to overclok the CPU the RAM will be overclocked too, right?

So, my question still the same.

I would appreciate if you or someone else could give me some tips regarding the viability of overclocking the CPU with those RAM modules.

Regards.

EDIT: BTW, the memory chip reference is ELPIDA J2108BCBG-DJ-F.

I did some research, and i found this:

http://aphnetworks.com/reviews/kingston_hyperx_khx1600c9d3x2k2_8gx_2x4gb/2

From that article/review, it seems that the Kingston Hyperx KHX1600C9D3X2K2/8GX 2x4GB uses this chips and from what they say there:

"A closer look at the memory chips on the Kingston HyperX KHX1600C9D3X2K2/8GX 2x4GB dual channel memory kit. The photo above should be quite clear, excuse the shakiness -- it says "J2108BCBG-DJ-F" on each IC. These are Elpida manufactured chips, with eight 256MB chips on each side for a total of 4GB on each DIMM. As mentioned on the previous page, these RAM modules run at a frequency of DDR3-1600 with modest 9-9-9-27 latencies at 2T command rate. Since these RAM are designed for Core i5/i7 processors, they operate at a stock voltage of 1.65V."

However, the other set of numbers/letters that appear below the "J2108BCBG-DJ-F" is different from mine: 1131AF03Y20.

But the strange thing is that in the CPU-Z, the RAM appears as 1333MHz.

What can you say about that? The RAM frequency can be locked? If so, that means that I can reach 1600MHz?

 

[jokyteddy]

1) Yes, overclocking your CPU will automatically overclock your ram
2) There's nothing strange about it. You bought Kingston KVR1333D3S8N9/2G, they're marketing it as 1333mhz ram so that's what will show up on CPU-Z. I don't know much about the chip but I found there's a 1066 mhz Kingston ram that uses the same chip (J2108BVBG-DJ-F). Even they have the same chip model no. doesn't promise you can achieve 1600 mhz

 

[AMSA7]

The chip that you're mentioning is not the same as I referred. The chip that I was referring to is this one: ELPIDA J2108BCBG-DJ-F, and not the one that you have mentioned "J2108BVBG-DJ-F". Right?

Have you seen the link that I have posted?

Regarding the review/tutorial/whatever, it seems that Kingston HyperX KHX1600C9D3X2K2/8GX 2x4GB dual channel memory kit (take a look at the link above) uses the same chip (ELPIDA J2108BCBG-DJ-F), so my question remains.

About the RAM frequency been or not locked to some specific value, means that it can reach more than that it is specified. If so, that means that I can reach 1600MHz? (same chip as the HyperX KHX1600C9D3X2K2/8GX 2x4GB dual channel memory kit, looking at that review!)

Kind regards.

 

[jokyteddy]

Oh my bad, it is the same model I just copied it wrong.
I did look at that review. The set of number under the model number doesn't matter, it varies from stick to stick. If they do actually use the same chip model and same PCB then theoretically you can achieve 1600mhz from your 1333mhz ram. Doesn't hurt to try as long as you don't put too much voltage on it.

 

[AMSA7]

Okay. For testing it, what you suggest? To test only the memories.

Should I drop the CPU multiplier, and then rise the FSB in order to see where can I get?

What should be the maximum memory voltage that I can use?

Regards.

 

[jokyteddy]

Yep, increase FSB and decrease multiplier but you also need to manually change the ram timings (increase them to 10-10-10-30). 1.65V or below is best. 1.7 is still save for 24/7 use anything over 1.7 is a bit unstable.

 

[AMSA7]

Hi there teddy.

I managed to overclock my memories up to 1600MHz. You can see the pictures below and give me your opinion about that (or anyone else here on the forum).

http://imageshack.us/photo/my-images/39/6s8n.JPG/

http://imageshack.us/photo/my-images/841/c896.jpg/

http://imageshack.us/photo/my-images/844/t7n8.jpg/

http://imageshack.us/photo/my-images/850/y3uh.jpg/

I want to test only the memories for now. Later, the CPU, but if you want, you can give me some tips to overclock the CPU them.

As I told you before, those are 4 modules of 2GB from Kingston. Kingston KVR1333D3S8N9/2G. They have the same chips as the Kingston HyperX KHX1600C9D3X2K2/8GX, as you can see in the above links.

I would appreciate any sugestion, opinion. How far those could get? Should I try more FSB in order to OC the memory and see the limit?

My CPU is an E8400 and with that FSB and multiplier 9x, it would run at 3.6GHz, don't know if it's enough or not.

By the way, I'm with stock cooler.

As you can see the memories are with only 1.55V and I run the memtest for 20minutes. How long would you suggest for me to run the memories?

Kind regards.

EDIT: I forgot to tell you this: In the CPU-Z, on the memory section, the FSB😀RAM is 1:2. How can I get that to 1:1?

EDIT2: I've run the memtest all night long (8hrs, with those configurations) and it didn't gave any errors! What you think about this?