Memory overclocking

Message boards : Number crunching : Memory overclocking
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile trader
Volunteer tester

Send message
Joined: 25 Jun 00
Posts: 126
Credit: 4,968,173
RAC: 0
United States
Message 1346456 - Posted: 14 Mar 2013, 8:24:14 UTC

I have an xmp enabled motherboard and xmp ram

cosair 8gb 1600mhz

right now running cpuz it says my ram is running at nowhere near 1600mhz

i was wondering what kind of boost seti and my system in general would get by taking my ram up to at least the 1600mhz it should be running at
I RTFM and it was WYSIWYG then i found out it was a PEBKAC error
ID: 1346456 · Report as offensive
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Jul 00
Posts: 51468
Credit: 1,018,363,574
RAC: 1,004
United States
Message 1346458 - Posted: 14 Mar 2013, 8:27:32 UTC - in response to Message 1346456.  

I have an xmp enabled motherboard and xmp ram

cosair 8gb 1600mhz

right now running cpuz it says my ram is running at nowhere near 1600mhz

i was wondering what kind of boost seti and my system in general would get by taking my ram up to at least the 1600mhz it should be running at

You won't see an amazing boost, but your system will not be running at optimum unless your RAM is doing what it should.

You should be able to go into the bios and manually raise the RAM speed.
If things get unstable, back off a bit.

That being said, if things get dicey, you are better off slacking the RAM a bit to achieve system stability.
"Freedom is just Chaos, with better lighting." Alan Dean Foster

ID: 1346458 · Report as offensive
Profile trader
Volunteer tester

Send message
Joined: 25 Jun 00
Posts: 126
Credit: 4,968,173
RAC: 0
United States
Message 1346461 - Posted: 14 Mar 2013, 8:35:48 UTC - in response to Message 1346458.  

can you give me a little more info on how to exactly do that or know a link where i can go and read up on it. dont want to turn my freshly built system into a boat anchor.
I RTFM and it was WYSIWYG then i found out it was a PEBKAC error
ID: 1346461 · Report as offensive
Profile Tazz
Volunteer tester
Avatar

Send message
Joined: 5 Oct 99
Posts: 137
Credit: 34,342,390
RAC: 0
Canada
Message 1346497 - Posted: 14 Mar 2013, 11:23:40 UTC - in response to Message 1346461.  

I had to bump the voltage up a little to get my 1600 MHz RAM to run at 1600, along with setting the speed manually in the BIOS. I think my voltage is at 1.53
</Tazz>
ID: 1346497 · Report as offensive
Profile SciManStev Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 20 Jun 99
Posts: 6651
Credit: 121,090,076
RAC: 0
United States
Message 1346500 - Posted: 14 Mar 2013, 11:41:29 UTC

I'm running 12 Gig of Corsair DDR3 2000 RAM running at 1925 MHz. I also had to increase the voltage in addition to the speed. The BCLK frequency can be adjusted, which increases the CPU speed as well. The best performance can be achieved with a CPU with an unlocked multiplier. That way you can work the BCLK frequency, and make adjustments with the multiplier to keep the CPU speed where you want it.

Over clocking anything is really a matter of trial and error. The basic rule is increase frequency until there is a problem, then up the voltage a bit until the problem goes away. Then up the frequency a bit further. Your system will pull more power as voltages and frequencies climb, which means more heat. I have two fans directly over my RAM chips, which helps keep the operating temps down. I also have 4, 8 inch fans in my tower, plus water cooling on the CPU and GPU's.

Steve
Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website
ID: 1346500 · Report as offensive
Sirius B Project Donor
Volunteer tester
Avatar

Send message
Joined: 26 Dec 00
Posts: 24875
Credit: 3,081,182
RAC: 7
Ireland
Message 1346544 - Posted: 14 Mar 2013, 14:27:31 UTC - in response to Message 1346536.  

We know that overclocking Processors and memory is possible, if you know what you are doing. How much increase in RAC does that give you? 10%, 20%, 30% ??
I am not deriding in any way those that have the expertise and knowledge to do this, Mark and his frozen Penny, will go down in history. But apart from the interest of just doing it, to prove that you can, what benefits do you achieve, when measured against the lifespan of memory and processors pushed beyond their design specifications.

I might be able to drive a Mini up the M1 at 120mph all day long, but I would soon be forking out for a new one! And don't forget, how many of us use OEM kit that has the MB locked :-)


Ah, the joys of self build.
ID: 1346544 · Report as offensive
Profile HAL9000
Volunteer tester
Avatar

Send message
Joined: 11 Sep 99
Posts: 6534
Credit: 196,805,888
RAC: 57
United States
Message 1346560 - Posted: 14 Mar 2013, 15:24:45 UTC

I used the XMP settings on my i7-860 to run the memory at 1600.
Running 4 tasks at a time, with HT enabled, it had a RAC about the same as the 5 other i7-860's I run at work with 8 tasks at once.
Running 8 tasks at a time it had a RAC of about 20% more than the other machines.
SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[
ID: 1346560 · Report as offensive
Keith White
Avatar

Send message
Joined: 29 May 99
Posts: 392
Credit: 13,035,233
RAC: 22
United States
Message 1346563 - Posted: 14 Mar 2013, 15:32:55 UTC - in response to Message 1346456.  

I have an xmp enabled motherboard and xmp ram

cosair 8gb 1600mhz

right now running cpuz it says my ram is running at nowhere near 1600mhz

i was wondering what kind of boost seti and my system in general would get by taking my ram up to at least the 1600mhz it should be running at

First, what exactly does CPUZ says your RAM is running at? You should see the DRAM Frequency (Timings area in the Memory Tab) around 800MHz.

The solution should be as easy as booting up into the computer's BIOS, going to the memory page and selecting the XMP profile for DDR3-1600.
"Life is just nature's way of keeping meat fresh." - The Doctor
ID: 1346563 · Report as offensive
Profile trader
Volunteer tester

Send message
Joined: 25 Jun 00
Posts: 126
Credit: 4,968,173
RAC: 0
United States
Message 1346610 - Posted: 14 Mar 2013, 18:10:55 UTC - in response to Message 1346563.  

I have an xmp enabled motherboard and xmp ram

cosair 8gb 1600mhz

right now running cpuz it says my ram is running at nowhere near 1600mhz

i was wondering what kind of boost seti and my system in general would get by taking my ram up to at least the 1600mhz it should be running at

First, what exactly does CPUZ says your RAM is running at? You should see the DRAM Frequency (Timings area in the Memory Tab) around 800MHz.

The solution should be as easy as booting up into the computer's BIOS, going to the memory page and selecting the XMP profile for DDR3-1600.



cpuz in one screen says..

dram freq 800.1
fsb:dram 1:6
cl 9
trcd 9
trp 9
tras 24
cr 2t

in another screen it says..

jedec#2 jedec#3 jedec#4 xmp-1600

freq 518mhz 592mhz 666mhz 800mhz
cas 7.0 8.0 9.0 9.0
ras to cas 7 8 9 9
ras precharge 7 8 9 9
tras 19 22 24 24
trc 27 30 34 41
command rate 2t


the memory i have is cosair vengeance xmp memory 2x4 8gb called cosair and read the info on the memory just to make sure i did get a mis ship
I RTFM and it was WYSIWYG then i found out it was a PEBKAC error
ID: 1346610 · Report as offensive
Keith White
Avatar

Send message
Joined: 29 May 99
Posts: 392
Credit: 13,035,233
RAC: 22
United States
Message 1346690 - Posted: 14 Mar 2013, 21:33:18 UTC - in response to Message 1346610.  
Last modified: 14 Mar 2013, 21:37:36 UTC

I have an xmp enabled motherboard and xmp ram

cosair 8gb 1600mhz

right now running cpuz it says my ram is running at nowhere near 1600mhz

i was wondering what kind of boost seti and my system in general would get by taking my ram up to at least the 1600mhz it should be running at

First, what exactly does CPUZ says your RAM is running at? You should see the DRAM Frequency (Timings area in the Memory Tab) around 800MHz.

The solution should be as easy as booting up into the computer's BIOS, going to the memory page and selecting the XMP profile for DDR3-1600.



cpuz in one screen says..

dram freq 800.1
fsb:dram 1:6
cl 9
trcd 9
trp 9
tras 24
cr 2t

in another screen it says..

jedec#2 jedec#3 jedec#4 xmp-1600

freq 518mhz 592mhz 666mhz 800mhz
cas 7.0 8.0 9.0 9.0
ras to cas 7 8 9 9
ras precharge 7 8 9 9
tras 19 22 24 24
trc 27 30 34 41
command rate 2t


the memory i have is cosair vengeance xmp memory 2x4 8gb called cosair and read the info on the memory just to make sure i did get a mis ship


Then everything is OK. DDR stands for double data rate (not Dance Dance Revolution in this case ;)) which means for every clock cycle you get two data fetches so it looks as if it's running at twice the clock speed. So 800 MHz is correct as is all the other settings CPUz is reporting.

The first screen (Memory) shows you what timings it's currently using while the second screen (SPD) shows you the choice of factory settings recorded on the memory stick itself.
"Life is just nature's way of keeping meat fresh." - The Doctor
ID: 1346690 · Report as offensive
Profile trader
Volunteer tester

Send message
Joined: 25 Jun 00
Posts: 126
Credit: 4,968,173
RAC: 0
United States
Message 1346704 - Posted: 14 Mar 2013, 22:08:37 UTC - in response to Message 1346690.  

ok thank you for the help and information!!
I RTFM and it was WYSIWYG then i found out it was a PEBKAC error
ID: 1346704 · Report as offensive

Message boards : Number crunching : Memory overclocking


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.