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Did i make any improvements? if so by how much?

post #1 of 9
Thread Starter 
Hey guys, so i know very little about RAM. Im guessing that the higher the frequency and lower the timings the better right?

well i upgraded my RAM recently from a 4GB 1333Mhz corsair kit to a Kingston 8GB 1600Mhz kit.

This is the RAM i am using right now
http://ncix.com/products/?sku=57869&vpn=KHX1600C9D3K2%2F8GX&manufacture=Kingston&promoid=1115

The timings were as follows

1600Mhz
9-9-9-27-1t

and i changed it to

1866Mhz
9-10-19-24-1t

I just randomly decided to play around with these settings so did i actually improve anything (besides faster Mhz lol) or am i missing something?

For stability i used OCCT and did 100 passes of memtest and it came out with no errors, are there any better programs for testing ram? Helpful answers will always get +REP thanks thumb.gif
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post #2 of 9
Thread Starter 
oh, and

1600Mhz
8-9-8-24-1t

also posted, so i could use that if it was better. is it?
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post #3 of 9
I think people use Memtest86 for sure stability of RAM.

I'd go with the
1866Mhz
9-10-9-24-1t

After 1600 from what I hear, you don't notice much of any differences.
post #4 of 9
you are running Intel, from what i have seen and heard Intel based systems ram oc shows better performance with speed oc and AMD does better with low timings, i could be wrong but this is what i have seen around the web.

I can verify the AMD part, i see a better performance with tighter timings rather than higher clocks with my athlon chip.
post #5 of 9
Quote:
Originally Posted by th3illusiveman View Post

Hey guys, so i know very little about RAM. Im guessing that the higher the frequency and lower the timings the better right?
well i upgraded my RAM recently from a 4GB 1333Mhz corsair kit to a Kingston 8GB 1600Mhz kit.
This is the RAM i am using right now
http://ncix.com/products/?sku=57869&vpn=KHX1600C9D3K2%2F8GX&manufacture=Kingston&promoid=1115
The timings were as follows
1600Mhz
9-9-9-27-1t
and i changed it to
1866Mhz
9-10-19-24-1t
I just randomly decided to play around with these settings so did i actually improve anything (besides faster Mhz lol) or am i missing something?
For stability i used OCCT and did 100 passes of memtest and it came out with no errors, are there any better programs for testing ram? Helpful answers will always get +REP thanks thumb.gif



You really did not change much... Actually slower on a few timings... The first number is CAS Latency, and is really the most crucial number... no pun... Since that is the same on both. It will take 9 clock cycles to give the data.

CL-tRCD-tRP-tRAS-CMD

I found this little blurb about it for you to read...

CL: CAS Latency. The time it takes between a command having been sent to the memory and when it begins to reply to it. It is the time it takes between the processor asking for some data from the memory and then returning it.

tRCD: RAS to CAS Delay. The time it takes between the activation of the line (RAS) and the column (CAS) where the data are stored in the matrix.

tRP: RAS Precharge. The time it takes between disabling the access to a line of data and the beginning of the access to another line of data.

tRAS: Active to Precharge Delay. How long the memory has to wait until the next access to the memory can be initiated.

CMD: Command Rate. The time it takes between the memory chip having been activated and when the first command may be sent to the memory. Sometimes this value is not announced. It usually is T1 (1 clock cycle) or T2 (2 clock cycles).
    
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by Joeteck View Post

You really did not change much... Actually slower on a few timings... The first number is CAS Latency, and is really the most crucial number... no pun... Since that is the same on both. It will take 9 clock cycles to give the data.
CL-tRCD-tRP-tRAS-CMD
I found this little blurb about it for you to read...
CL: CAS Latency. The time it takes between a command having been sent to the memory and when it begins to reply to it. It is the time it takes between the processor asking for some data from the memory and then returning it.
tRCD: RAS to CAS Delay. The time it takes between the activation of the line (RAS) and the column (CAS) where the data are stored in the matrix.
tRP: RAS Precharge. The time it takes between disabling the access to a line of data and the beginning of the access to another line of data.
tRAS: Active to Precharge Delay. How long the memory has to wait until the next access to the memory can be initiated.
CMD: Command Rate. The time it takes between the memory chip having been activated and when the first command may be sent to the memory. Sometimes this value is not announced. It usually is T1 (1 clock cycle) or T2 (2 clock cycles).

what effect does the overall memory clock have then? the xxxxMhz? i only increased the tRCD by 1 cycle but added 266Mhz more to the memory clock.
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RAMHard DriveHard DriveOS
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Bender
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post #7 of 9
Quote:
Originally Posted by th3illusiveman View Post

what effect does the overall memory clock have then? the xxxxMhz? i only increased the tRCD by 1 cycle but added 266Mhz more to the memory clock.

This is only good for overclocking your CPU... So the higher the Mhz, the higher you can go with your CPU... 1333Mhz is the maximum on most boards, unless you override in BIOS...(Overclocking) When you overclock RAM, it tends to become very unstable...

When I did my Core i5 overclock I got 2 x 1gig 2133Mhz RAM... Never came close to 2133, but had a hell of alot of head room! lol
Edited by Joeteck - 11/30/11 at 9:40am
    
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post #8 of 9
Thread Starter 
Quote:
Originally Posted by Joeteck View Post

This is only good for overclocking your CPU... So the higher the Mhz, the higher you can go with your CPU... 1333Mhz is the maximum on most boards, unless you override in BIOS...(Overclocking) When you overclock RAM, it tends to become very unstable...
When I did my Core i5 overclock I got 2 x 1gig 2133Mhz RAM... Never came close to 2133, but had a hell of alot of head room! lol

i see, so going by what you just told me. 1600Mhz, 8-9-8-24-1t would be the best right?

would i see any benefits from lowering it to 1333Mhz and lowering the timings even more?

sorry if i'm abit slow at getting this, but work with me here thumb.gif
Bender
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RAMHard DriveHard DriveOS
8GB 1600Mhz OCZ Vertex 3 240GB SSD OCZ Vertex 3 240GB SSD windows 10 64bit 
MonitorKeyboardPowerCase
Asus MG279Q Logitech G510  Corsair TX750 CM II 690 Advanced 
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Bender
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RAMHard DriveHard DriveOS
8GB 1600Mhz OCZ Vertex 3 240GB SSD OCZ Vertex 3 240GB SSD windows 10 64bit 
MonitorKeyboardPowerCase
Asus MG279Q Logitech G510  Corsair TX750 CM II 690 Advanced 
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post #9 of 9
Quote:
Originally Posted by th3illusiveman View Post

i see, so going by what you just told me. 1600Mhz, 8-9-8-24-1t would be the best right?
would i see any benefits from lowering it to 1333Mhz and lowering the timings even more?
sorry if i'm abit slow at getting this, but work with me here thumb.gif

Be careful lowering those times too much... You could get a BSOD, or the system may not even boot... Leaving the RAM @ 1333 and playing with the times would be better..

Try to match what you had first, then start to lower the CAS to 8... so 8-9-9-24, but first try 9-9-9-24.
    
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