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Bunch of questions about my memory and timings etc..

post #1 of 3
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Hello I just have a bunch of questions I'd like to ask about my Memory and timings etc. I have some kingston hyper x 1600 mhz @ 1.65 volts, 8gb. running i5 3570k on asrock extreme 4..

A. FSB:DRam ratio is 1:6 does this mean anything? is it relevant at all?
B. Command rate is at 2t, is this what it should be at?
C. How do I read CPU-Z under the "SPD" section?
It says Max Bandwith PC3-10700 (667mhz) isn't this wrong? Shouldn't it be higher if it's running at 1600 mhz?
Also where it says JEDEC#1-4 under the CAS timings they are all different and do not say 9-9-9-27 like I set it up in bios.

Also the voltage says 1.5v under jedec1-4 even though I set it to 1.65 in bios.


Any help?

Thanks biggrin.gif
post #2 of 3
Quote:
Originally Posted by turkletont View Post

Hello I just have a bunch of questions I'd like to ask about my Memory and timings etc. I have some kingston hyper x 1600 mhz @ 1.65 volts, 8gb. running i5 3570k on asrock extreme 4..

A. FSB:DRam ratio is 1:6 does this mean anything? is it relevant at all?

 

No because now the "FSB" is at 100 MHz. Back in the day when we overclocked the FSB, this was a concern. Now that we aren't doing that (we no longer even have a FSB, just a BCLK), the ratio is no longer a part of it.

 

 

Quote:
Originally Posted by turkletont View Post

B. Command rate is at 2t, is this what it should be at?

 

It should be whatever your memory is rated for. So look for something like 2T, 1T, or 2N or 1N on the specifications page for your memory or on the sticker on your memory.

 

 

Quote:
Originally Posted by turkletont View Post

C. How do I read CPU-Z under the "SPD" section?
It says Max Bandwith PC3-10700 (667mhz) isn't this wrong? Shouldn't it be higher if it's running at 1600 mhz?

 

This is the max bandwidth for JEDEC #3, not your current bandwidth.

 

These columns don't represent your current settings; they're just informational. It's like looking at the sticker on your memory or looking at the specifications on the box/packaging or on the website.

 

 

Quote:
Originally Posted by turkletont View Post

Also where it says JEDEC#1-4 under the CAS timings they are all different and do not say 9-9-9-27 like I set it up in bios.

 

Each JEDEC is a different stable combination you should be able to use. Of course, use the one on the far right. ;)

 

 

Quote:
Originally Posted by turkletont View Post

Also the voltage says 1.5v under jedec1-4 even though I set it to 1.65 in bios.

 

Does it say 1.5V in the far-right column? If so, then you should probably use 1.5V.


Edited by TwoCables - 4/18/13 at 9:26pm
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #3 of 3
Quote:
Originally Posted by turkletont View Post

Hello I just have a bunch of questions I'd like to ask about my Memory and timings etc. I have some kingston hyper x 1600 mhz @ 1.65 volts, 8gb. running i5 3570k on asrock extreme 4..

A. FSB:DRam ratio is 1:6 does this mean anything? is it relevant at all?
B. Command rate is at 2t, is this what it should be at?
C. How do I read CPU-Z under the "SPD" section?
It says Max Bandwith PC3-10700 (667mhz) isn't this wrong? Shouldn't it be higher if it's running at 1600 mhz?
Also where it says JEDEC#1-4 under the CAS timings they are all different and do not say 9-9-9-27 like I set it up in bios.

Also the voltage says 1.5v under jedec1-4 even though I set it to 1.65 in bios.


Any help?

Thanks biggrin.gif

A: It means that your mobo's clock and your ram clock have that relation between them. No relevant at all. In the past it was easy to have 1:1 with core 2 duos, but that was more of an epeen thing.
B: it should be at what is specified by your RAM or at whichever is stable.
C: I don't really remember but it will show you your profiles - what timings you ram should be running at the respective clocks and voltages.

DDR is Double data rate, which means that it's DOUBLE data rate, so in short 1334mhz is actually 667mhz. Dual channel makes 1334mhz ram run truly at 1334mhz.
You can run your ram at a higher clock, if you overclock it. But where does it says PC3-10700? If it's a reading something must be out of place.

I just realised you are talking about the SPD section. Well, like I said, those are the profiles your ram could run at.


1.5v under jedec1-4 mjeans that those profiles jedec1-4 use only 1.5v



Want my advice? Don't bother with your RAM unless you are an extreme benchmarker. Are you? Then loose the timing, don't mind overckocing your ram. Keep it below or on default specs. The reason for this is that it's really hard to OC ram and the gains are minimal.

Going from single to dual channel (1066mhz ddr2) in a game in the source engine, for example - when I did this test, I went from 192FPS to 192,5. That's more than 1% gain (in this case the GPU was the bottleneck, however even when it's not the GPU your gains are too small)
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Competitive CS:GO
(15 items)
 
  
CPUMotherboardGraphicsRAM
A10-6800k gigabyte GA-F2A88XM-HD3 iGPU TridentX 2x4gb @2400mhz CL10 
Hard DriveOptical DriveCoolingOS
crucial m4 256gb none Stock.. 8 pro + mint 15 cinnamon 
MonitorKeyboardPowerMouse
SyncMaster 997 mb (crt) random TR2 600w CM Storm Spawn 
Mouse PadAudio
QcK+ Shure SRH 750DJ+FiiO E5 
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