Overclock.net › Forums › Components › Memory › should my ram read 1600mhz during prime95 blend?
New Posts  All Forums:Forum Nav:

should my ram read 1600mhz during prime95 blend?

post #1 of 7
Thread Starter 
Hey all,
I just got my sig rig up and working yesterday an am doing a Prime95 run on Blend and my cpu shows 3.4ghz in CPUz, so thats all good but I noticed my ram only shows 669mhz. Is that right? do I need to tweak some settings or does the ram throttle as needed like the cpu and p95 just doesnt load it enough? only 2.77gb are being used in the test.

I have 4x2gb kingston hyperx. Cpuz shows 9-9-9-24 timings and FSB : Dram 1:5

Sorry if this is a noob question

Thanks
Edited by MCImes - 4/5/11 at 12:10am
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @4.6Ghz @1.32v Asus P8p67 Pro 5670 8gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
512Gb Samsung SSD and 2x2Tb Seagate DVD burner Windows 7 Ultimate 55" LG 1080 TV 
PowerCase
Corsair TX650 Cooler Master Gladiator 600 
  hide details  
Reply
Main
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @4.6Ghz @1.32v Asus P8p67 Pro 5670 8gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
512Gb Samsung SSD and 2x2Tb Seagate DVD burner Windows 7 Ultimate 55" LG 1080 TV 
PowerCase
Corsair TX650 Cooler Master Gladiator 600 
  hide details  
Reply
post #2 of 7
669 MHz is actually 1338MHz because you have DDR memory (Double Data Rate). I know it's DDR3, but that "3" is a little bit like the version number, so it doesn't have anything to do with the multiplier. DDR is DDR.

So it looks like you need to make it say 800 MHz in order for it to actually be 1600 MHz.
It's a computer!
(20 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 
Hard DriveHard DriveHard DriveHard Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Toshiba 3TB P300 
Optical DriveOptical DriveCoolingOS
Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail 
MonitorKeyboardPowerCase
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 
MouseMouse PadAudioAudio
Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(20 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 
Hard DriveHard DriveHard DriveHard Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Toshiba 3TB P300 
Optical DriveOptical DriveCoolingOS
Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail 
MonitorKeyboardPowerCase
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 
MouseMouse PadAudioAudio
Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 7
CPU-z>Memory. The DRAM Frequency should be 800/800.1. The way you read DRAM Frequency is you multiply the speed listed in CPU-z by 2.

So since your RAM is 1600, it should read 800. Because 800+800=1600.

So no, your RAM should not be reading 669mhz. Go into the BIOS and set your DRAM Frequency to 1600. It's most likely set to Auto, which is 1336 (or in your case 1338).
Quote:
Originally Posted by TwoCables;13006643 
669 MHz is actually 1338MHz because you have DDR memory (Double Data Rate). I know it's DDR3, but that "3" is a little bit like the version number, so it doesn't have anything to do with the multiplier. DDR is DDR.

So it looks like you need to make it say 800 MHz in order for it to actually be 1600 MHz.

thumb.gif
Edited by pjBSOD - 4/5/11 at 12:43am
post #4 of 7
Quote:
Originally Posted by E-Peen;13006659 
CPU-z>Memory. The DRAM Frequency should be 800/800.1. The way you read DRAM Frequency is like this. Since you have 2 4GB sticks, which obviously equal 8, the DRAM Frequency shown in CPU-z is half that number.

So since your RAM is 1600, it should read 800. Because 800+800=1600.

So no, your RAM should not be reading 669mhz. Go into the BIOS and set your DRAM Frequency to 1600. It's most likely set to Auto, which is 1336 (or in your case 1338).



thumb.gif
Actually, it's because DDR means "Double Data Rate". So, multiply what CPU-Z says by 2 in order to see the clock speed. It doesn't matter how many sticks of memory are installed. DDR is DDR regardless if it's DDR, DDR2, or DDR3; it's all Double Data Rate. So it has nothing to do with the number of sticks, but rather it's due to the fact that DDR is "DRAM Frequency" multiplied by 2.

So, 669 MHz is 1338 MHz.
It's a computer!
(20 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 
Hard DriveHard DriveHard DriveHard Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Toshiba 3TB P300 
Optical DriveOptical DriveCoolingOS
Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail 
MonitorKeyboardPowerCase
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 
MouseMouse PadAudioAudio
Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(20 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 
Hard DriveHard DriveHard DriveHard Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Toshiba 3TB P300 
Optical DriveOptical DriveCoolingOS
Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail 
MonitorKeyboardPowerCase
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 
MouseMouse PadAudioAudio
Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #5 of 7
Quote:
Originally Posted by TwoCables;13006679 
Actually, it's because DDR means "Double Data Rate". So, multiply what CPU-Z says by 2 in order to see the clock speed. It doesn't matter how many sticks of memory are installed. DDR is DDR regardless if it's DDR, DDR2, or DDR3; it's all Double Data Rate.

So, 669 MHz is 1338 MHz.

Correct. Either way, we're both correct. I just worded it a bit wrong.
post #6 of 7
But you said it's dictated by how many sticks of memory are installed.

Anyway, he has the information he needs now thanks to us.
It's a computer!
(20 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 
Hard DriveHard DriveHard DriveHard Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Toshiba 3TB P300 
Optical DriveOptical DriveCoolingOS
Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail 
MonitorKeyboardPowerCase
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 
MouseMouse PadAudioAudio
Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(20 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 
Hard DriveHard DriveHard DriveHard Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Toshiba 3TB P300 
Optical DriveOptical DriveCoolingOS
Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail 
MonitorKeyboardPowerCase
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 
MouseMouse PadAudioAudio
Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #7 of 7
Quote:
Originally Posted by TwoCables;13006697 
But you said it's dictated by how many sticks of memory are installed.

Anyway, he has the information he needs now thanks to us.

Yeah, I worded it wrong and you corrected me. Edited it for lack of confusion smile.gif
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › should my ram read 1600mhz during prime95 blend?