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***What Phenom II x 4's Actually Can Run....***

post #1 of 13
Thread Starter 
Ram at 2000Mhz?

I have a 955 from back in early 2010 and it can only do about 1725Mhz stable. I'm looking to get my 2000MHz Ram to run at it's rated speeds and only need to know which processors are doing this?

If anyone has experince with these CPU's and 2000Mhz Ram, chime in!

Thanks!
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post #2 of 13
Yeah, my 950 has issues with ram @ 2000Mhz :/
i can only seem to get it stable @ 1866
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post #3 of 13
Not going to get hypers stable at 2000 on any current amd chip unfortunately.

PSC with the right board and right thuban, easy
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post #4 of 13
Thread Starter 
Quote:
Originally Posted by el gappo View Post
Not going to get hypers stable at 2000 on any current amd chip unfortunately.

PSC with the right board and right thuban, easy

Hypers referring to my Ram?

What is "The Right Processor" then?
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post #5 of 13
Yeah your ram. Not gonna get it stable at 2000 on amd ever.

Right cpu would be a thuban ( zosma if you are hell bent on a quad? ) with a half decent IMC.

Would need new ram tho for 2ghz. Counter productive tho really, hypers are the best
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post #6 of 13
Thread Starter 
Quote:
Originally Posted by el gappo View Post
Yeah your ram. Not gonna get it stable at 2000 on amd ever.

Right cpu would be a thuban ( zosma if you are hell bent on a quad? ) with a half decent IMC.

Would need new ram tho for 2ghz. Counter productive tho really, hypers are the best

Gotcha. They are 2ghz Ram... Cas 8... Just running them at 1.6ghz Cas 6...

I just have a C3 955. I don't really see much point, at least for me, to have anything over a quad... Has there been any talk as to what batches are running the best as far the PII Thuban's? Or is it still coming down to Die Cut?
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post #7 of 13
It's down to the IC's. Hypers just aren't good for high frequencies on amd, not stable anyway.

Week 1015 were great but 1040's have been nice to me. Luck of the draw.
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post #8 of 13
AMD performs better with low timings and speed than high speed but higher timings, iirc 1333 CL5 or CL6 was faster than 1600 CL6 or CL7 when benched by OCZTony.
    
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post #9 of 13
Gappo is right, it can only really be done with thuban and some decent ram. I did it with 7-9-6. However it would only prime at 7-10-6 2000, even though it runs perfectly stable at 2000 7-9-7.

http://slappablog.wordpress.com/2010...ud5-continued/

Unfortunately, the IMC on the X4's is whats holding the ram back. They are tuned for tighter timings (1600MHz 6-6-6 or better) and hit a wall at about 1780MHz ram speed no matter what the timings. 2000 has been done, but with so many tweaks and running in ganged mode that it has no real performance advantage.
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post #10 of 13
Thread Starter 
Quote:
Originally Posted by el gappo View Post
It's down to the IC's. Hypers just aren't good for high frequencies on amd, not stable anyway.

Week 1015 were great but 1040's have been nice to me. Luck of the draw.
Even if they are Rated for 2ghz @ Cas8? I's just the mix of the hypers on an AMD system?

Quote:
Originally Posted by Brutuz View Post
AMD performs better with low timings and speed than high speed but higher timings, iirc 1333 CL5 or CL6 was faster than 1600 CL6 or CL7 when benched by OCZTony.
I've been running this Kit @ 1.6ghz Cas6 with 3ghz C-NB for about over a year now.... So these can do it on the C3 955 on the GD70 that I have.... BUt the they are a 2000Mhz Cas 8 Kit... Not 1600mhz

Quote:
Originally Posted by Slappa View Post
Gappo is right, it can only really be done with thuban and some decent ram. I did it with 7-9-6. However it would only prime at 7-10-6 2000, even though it runs perfectly stable at 2000 7-9-7.

http://slappablog.wordpress.com/2010...ud5-continued/

Unfortunately, the IMC on the X4's is whats holding the ram back. They are tuned for tighter timings (1600MHz 6-6-6 or better) and hit a wall at about 1780MHz ram speed no matter what the timings. 2000 has been done, but with so many tweaks and running in ganged mode that it has no real performance advantage.
That's about what my C3 955 can do... Right around there.... Some were getting 1800 Cas6 with the C3 PhII's with Dom GTS's though... So how does that factor into the equasion? Just enough extra on the Ram for the Stability at 1800Cas6 (1.65v-1.7)
So with the new Quad Thuban's though, they have stronger IMC's than the PhII's, Right? If I can run my C3 955 (Die Cut 90347) @ 4ghz +3ghz C-NB and 1.6ghz Cas 6 I should be able to at least pump up the NB on the Thuban quit a bt, if not the Ram as well!? Or Keep a 3ghz C-NB and pump the Ram Freq up...

Technically shouldn't the Quad Thubans be able to Run the Same Ram Frq's as the Sixer's?
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