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Help me through my bottleneck! ( 6-7-6-24-1T @ 1333mhz)  

post #1 of 27
1/27/12 at 7:59am
Thread Starter 
6-7-6-24-1T @ 1333mhz @1.65v
Is rated at 8-9-8-2T@1600mhz @ 1.65v

338

Is there any other way to get this down?

I'm trying to get a cas5 @ 1333 speed. Benchies show this + high NB is > 1600mhz @cas8
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post #2 of 27
1/27/12 at 8:45am
Not if the CPU/mobo/RAM are unwilling to do so... wink.gif
post #3 of 27
1/27/12 at 9:24am
Thread Starter 
Quote:
Originally Posted by AMD4ME View Post

Not if the CPU/mobo/RAM are unwilling to do so... wink.gif

I think thats the case.

Going the other direction now, loosening timings and cranking up the ram speed, I compared and it has slightly higher bandwidth, and 1ms latency faster
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post #4 of 27
1/27/12 at 10:20am
Quote:
Originally Posted by xunedeinx View Post

I think thats the case.
Going the other direction now, loosening timings and cranking up the ram speed, I compared and it has slightly higher bandwidth, and 1ms latency faster

Yeah, unfortunately there are no tangible system gains by pushing DDR3 RAM latencies or frequency unless you can double the frequency. Then you might see ~2% gain. DDR3 RAM is not a system bottleneck.
post #5 of 27
1/27/12 at 10:40am
  • xd_1771
  • Mess with the goat, get the horns
  • Forum Moderator

A high NB clock can really unlock a metric crapton of otherwise hidden bandwidth because you're directly increasing the clock speed of the integrated memory controller.

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post #6 of 27
1/27/12 at 11:01am
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post

A high NB clock can really unlock a metric crapton of otherwise hidden bandwidth because you're directly increasing the clock speed of the integrated memory controller.

How high is good? I'm stable at 4.12ghz cpu, 1566 ram, and 2560nb.

Running occt AND IBT as I type!

7.31 in cinebench btw.
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post #7 of 27
1/27/12 at 7:46pm
Most Thubans can do about 3000mhz or so on the memory controller. Try raising CPU-NB to 1.35volts.
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post #8 of 27
1/30/12 at 11:40am
i second the 3ghz suggestion, my sempron 140 unlocked and i was able to run the cpu-nb at 3020mhz daily
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post #9 of 27
1/31/12 at 8:29am
Thread Starter 
Set it at 4ghz@ stock volts 1.45, 1600mhz ram with 7-8-7-22, 3000mhz NB @1.35v

is a HELL of a lot faster! Just don't show it in the benchies for w/e reason.

Its so snappy and everything seems to open a lot sooner, and on top of it, my hdtune went up from about 200mb/s to 230mb/s:thumb:
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post #10 of 27
1/31/12 at 11:36am
Quote:
Originally Posted by xunedeinx View Post

Set it at 4ghz@ stock volts 1.45, 1600mhz ram with 7-8-7-22, 3000mhz NB @1.35v
is a HELL of a lot faster! Just don't show it in the benchies for w/e reason.
Its so snappy and everything seems to open a lot sooner, and on top of it, my hdtune went up from about 200mb/s to 230mb/s:thumb:

It doesn't show because the RAM is not a bottleneck to the entire PC system. You do realize that you only changed the latency by ~ .000625 nano seconds, right? wink.gif
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