Overclock.net › Forums › Components › Memory › DDR2 native speed
New Posts  All Forums:Forum Nav:

DDR2 native speed - Page 2

post #11 of 26
Ropey, I tend to agree with you, I can't figure out why it would be an improvment either. Nor have I seen any proof or plausible explanation as to why.

I buy faster DDR2 than my FSB can go so that I can underclock my RAM and get tighter timings. It's hard to buy DDR400 rated at 3-3-3-6 and run it at 533 speed with the same timings. But you can buy DDR675 rated at 5-5-5-15 and run it at 533 with 3-3-3-6.
post #12 of 26
Thread Starter 
Quote:
Originally Posted by Thumper
Ropey, I tend to agree with you, I can't figure out why it would be an improvment either. Nor have I seen any proof or plausible explanation as to why.

I buy faster DDR2 than my FSB can go so that I can underclock my RAM and get tighter timings. It's hard to buy DDR400 rated at 3-3-3-6 and run it at 533 speed with the same timings. But you can buy DDR675 rated at 5-5-5-15 and run it at 533 with 3-3-3-6.
I am not saying it is not possible either. I am just saying until proof or plausible explanation that expands my view of physics is shown valid in this event I will not change this view. The problem with benchmarks is that they are not clear indicators of the real world functions. My benchmarks on two systems of 630 3.0 @ 4.0GHz have not shown this supposed increase in function and 3D graphics benchmarks have far to many variables to be a valid indicator of ram speed effecting bandwidth which is the reason for bandwidth benchmarks in the first place. Now for putting faith in benchmarks? How often have we seen benches show a faster applied event only to realize that in reality there is no increase on the stopwatch when theoretical application is turned to physical application. The models of Netburst showed a different processor that would easily make 5.0GHz+ speeds. The reality? Intel never even released 4.0GHz parts. That's why I don't believe my benches either as they are NOT real world.

And yes I agree with you on the timings as well.

R
Roped In
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 2600k P8P67 Pro Rev (3.1) @ B3 XFX Radeon HD 6950 XXX 16GB G.SKILL Ripjaws 9-11-9-28 
Hard DriveOptical DriveOSMonitor
2 X Callisto Deluxe 25nm 60GB Plextor PX-B910SA 4x Blu-ray DVD-RW Win7 64 2 x Samsung 275T+ 
KeyboardPowerCaseMouse
Logitech G15 Corsair HX10000 Antec 1200 Logitech G7 
Mouse Pad
Splatter Game Pad 
  hide details  
Reply
Roped In
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 2600k P8P67 Pro Rev (3.1) @ B3 XFX Radeon HD 6950 XXX 16GB G.SKILL Ripjaws 9-11-9-28 
Hard DriveOptical DriveOSMonitor
2 X Callisto Deluxe 25nm 60GB Plextor PX-B910SA 4x Blu-ray DVD-RW Win7 64 2 x Samsung 275T+ 
KeyboardPowerCaseMouse
Logitech G15 Corsair HX10000 Antec 1200 Logitech G7 
Mouse Pad
Splatter Game Pad 
  hide details  
Reply
post #13 of 26
Quote:
Originally Posted by Ropey
How often have we seen benches show a faster applied event only to realize that in reality there is no increase on the stopwatch when theoretical application is turned to physical application.
Exactly.

And I forgot to mention, I did try changing my bandwith and running SuperPi (figured that was more real-world and less benchmark) and my score did not change with my CPU at 3.94 (281FSB), timings of 4-4-4-8, i got 33 seconds on a 1 million point pie run. I ran the RAM at 1:1 (562Mhz) and at 750Mhz. No change in SuperPi score.
post #14 of 26
How do you adjust the timings of the memory? Is that possible in BIOS?
My System
(13 items)
 
  
CPUMotherboardOSMonitor
P4 650 Prescott 3.4GHz Asus P5GDC-V Deluxe i915G Windows XP PRO SP2 AG neovo F-417 LCD x 2 
KeyboardPowerCaseMouse
Cherry Q-TEC 400 Watt Custom Made Logitech Optical Mouse 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
P4 650 Prescott 3.4GHz Asus P5GDC-V Deluxe i915G Windows XP PRO SP2 AG neovo F-417 LCD x 2 
KeyboardPowerCaseMouse
Cherry Q-TEC 400 Watt Custom Made Logitech Optical Mouse 
  hide details  
Reply
post #15 of 26
Depends on your BIOS. If you can, it would be under ADVANCED, and CHIPSET in the BIOS. It should be labeled CONFIGURE BY SPD and set to AUTO, if you change it to manual, it should expand out and show you your timings, which you can then change.

Just as with OCing, only small changes should be made, and only to one number at a time, then check to see that system will boot to windows. Also, running memtest is a good idea to test it out.
post #16 of 26
Quote:
Originally Posted by Thumper
Exactly.

And I forgot to mention, I did try changing my bandwith and running SuperPi (figured that was more real-world and less benchmark) and my score did not change with my CPU at 3.94 (281FSB), timings of 4-4-4-8, i got 33 seconds on a 1 million point pie run. I ran the RAM at 1:1 (562Mhz) and at 750Mhz. No change in SuperPi score.
Now I find that very strange....
I ran 6 pi runs at 6 different mem bandwidths and get 6 different(faster ea. time) speeds in the run. exact same cpu speeds and mem timings for all 6 runs.




Busa's Opti
(13 items)
 
  
CPUMotherboardGraphicsRAM
intel E6700 P5W DH Deluxe Wifi BFG 7800gtx 2g pc6400 4-4-4-12 
Hard DriveOptical DriveOSMonitor
2x WD 74G raptors in raid0 NEC 3520 winXP sp2 Dell 24" widescreen LCD 
KeyboardPowerCaseMouse
Z board w/bf2 keyset Zeus 650sli+450 dual booting UFO Opti1203 blk/UV blue logitech G7 
Mouse Pad
Xtrack "ripper" 
  hide details  
Reply
Busa's Opti
(13 items)
 
  
CPUMotherboardGraphicsRAM
intel E6700 P5W DH Deluxe Wifi BFG 7800gtx 2g pc6400 4-4-4-12 
Hard DriveOptical DriveOSMonitor
2x WD 74G raptors in raid0 NEC 3520 winXP sp2 Dell 24" widescreen LCD 
KeyboardPowerCaseMouse
Z board w/bf2 keyset Zeus 650sli+450 dual booting UFO Opti1203 blk/UV blue logitech G7 
Mouse Pad
Xtrack "ripper" 
  hide details  
Reply
post #17 of 26
and #6...
Busa's Opti
(13 items)
 
  
CPUMotherboardGraphicsRAM
intel E6700 P5W DH Deluxe Wifi BFG 7800gtx 2g pc6400 4-4-4-12 
Hard DriveOptical DriveOSMonitor
2x WD 74G raptors in raid0 NEC 3520 winXP sp2 Dell 24" widescreen LCD 
KeyboardPowerCaseMouse
Z board w/bf2 keyset Zeus 650sli+450 dual booting UFO Opti1203 blk/UV blue logitech G7 
Mouse Pad
Xtrack "ripper" 
  hide details  
Reply
Busa's Opti
(13 items)
 
  
CPUMotherboardGraphicsRAM
intel E6700 P5W DH Deluxe Wifi BFG 7800gtx 2g pc6400 4-4-4-12 
Hard DriveOptical DriveOSMonitor
2x WD 74G raptors in raid0 NEC 3520 winXP sp2 Dell 24" widescreen LCD 
KeyboardPowerCaseMouse
Z board w/bf2 keyset Zeus 650sli+450 dual booting UFO Opti1203 blk/UV blue logitech G7 
Mouse Pad
Xtrack "ripper" 
  hide details  
Reply
post #18 of 26
Thread Starter 
So you gain a ~1s differential between 1:1 and 1:2?

Pretty minimal yet a difference. This could well be within the boundaries of ECC correction though and might have nothing to do with the data stream. ECC validation done in the dram would (as I have said in my posts) make a small difference.

Quote:
Originally Posted by Ropey
Other than ram copy via ECC there is no showing of performance increases.
Not yet convincing to me. Theoretically an addition of velocities would show a far greater increase with 250MHz:500MHz.

R
Roped In
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 2600k P8P67 Pro Rev (3.1) @ B3 XFX Radeon HD 6950 XXX 16GB G.SKILL Ripjaws 9-11-9-28 
Hard DriveOptical DriveOSMonitor
2 X Callisto Deluxe 25nm 60GB Plextor PX-B910SA 4x Blu-ray DVD-RW Win7 64 2 x Samsung 275T+ 
KeyboardPowerCaseMouse
Logitech G15 Corsair HX10000 Antec 1200 Logitech G7 
Mouse Pad
Splatter Game Pad 
  hide details  
Reply
Roped In
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 2600k P8P67 Pro Rev (3.1) @ B3 XFX Radeon HD 6950 XXX 16GB G.SKILL Ripjaws 9-11-9-28 
Hard DriveOptical DriveOSMonitor
2 X Callisto Deluxe 25nm 60GB Plextor PX-B910SA 4x Blu-ray DVD-RW Win7 64 2 x Samsung 275T+ 
KeyboardPowerCaseMouse
Logitech G15 Corsair HX10000 Antec 1200 Logitech G7 
Mouse Pad
Splatter Game Pad 
  hide details  
Reply
post #19 of 26
Quote:
Originally Posted by busa
Now I find that very strange....
I ran 6 pi runs at 6 different mem bandwidths and get 6 different(faster ea. time) speeds in the run. exact same cpu speeds and mem timings for all 6 runs.
Well, I don't have mine set to return decimal results, that's true, but as was pointed out, the change you noted was in milliseconds.

Not a noticable change.
post #20 of 26
Quote:
Originally Posted by Thumper
Well, I don't have mine set to return decimal results, that's true, but as was pointed out, the change you noted was in milliseconds.

Not a noticable change.
Well I realize it's not a huge difference....1.2 seconds is a lot of "miliseconds'..and I didnt really expect a huge difference. But in the world of computers and performance....1.2 seconds is a pretty big difference. As was stated before that graphics benches are to varied to get a good results....I get the same results running the same bandwidth tests in AM3...about 10k difference. I'm not sure what Ropey is looking for but the results I posted show a increase in performance to me.
But thats just my worthless opinion....
Busa's Opti
(13 items)
 
  
CPUMotherboardGraphicsRAM
intel E6700 P5W DH Deluxe Wifi BFG 7800gtx 2g pc6400 4-4-4-12 
Hard DriveOptical DriveOSMonitor
2x WD 74G raptors in raid0 NEC 3520 winXP sp2 Dell 24" widescreen LCD 
KeyboardPowerCaseMouse
Z board w/bf2 keyset Zeus 650sli+450 dual booting UFO Opti1203 blk/UV blue logitech G7 
Mouse Pad
Xtrack "ripper" 
  hide details  
Reply
Busa's Opti
(13 items)
 
  
CPUMotherboardGraphicsRAM
intel E6700 P5W DH Deluxe Wifi BFG 7800gtx 2g pc6400 4-4-4-12 
Hard DriveOptical DriveOSMonitor
2x WD 74G raptors in raid0 NEC 3520 winXP sp2 Dell 24" widescreen LCD 
KeyboardPowerCaseMouse
Z board w/bf2 keyset Zeus 650sli+450 dual booting UFO Opti1203 blk/UV blue logitech G7 
Mouse Pad
Xtrack "ripper" 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › DDR2 native speed