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64gb Question...

post #1 of 6
Thread Starter 
So I see that people think 2 times 32gb sets will be fine. And other similar discussions in other threads but in my case (using video and 3D programs) and maxing out at 64gb some people have been warning of having to underclock my RAM frown.gif (ie 1600mhz to 1333).

So my question is do you think its better to go for something like this: http://www.overclockers.co.uk/showproduct.php?prodid=MY-067-PA&groupid=701&catid=8&subcat=817 With higher MHZ and higher CAS timings

Or something like this : http://www.overclockers.co.uk/showproduct.php?prodid=MY-061-PA With lower MHZ and lower CAS timings ? To get the best performance.


I assume I would have to keep the RAM at stock speeds due to the enormous amount of it and problems at this level of RAM.

So that would be 2 sets of each to make 64gb in a asus p9x79 pro with 3930k overclock a bit to 4.4 ish .

Thanks.
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CPUMotherboardGraphicsGraphics
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post #2 of 6
Thread Starter 
Thing is in the adobe forums they seem to say cas no longer matters were as these sort of forums say cas does - confusing! Must be something to do with the use?
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CPUMotherboardGraphicsGraphics
i7 3930k @ 4.6ghz Asus p9x79 pro ATI R9 290 4GB sapphire tri x OC ATI R9 290 4GB sapphire tri x OC 
RAMHard DriveHard DriveHard Drive
64gb Ballistix VLP sport 1600 mhz 9-9-9-24  Samsung 840 pro (OS drive) Samsung 840 pro (Cache drive) Seagate constellation es 1tb (RAID 10) 
Hard DriveHard DriveHard DriveOptical Drive
Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) blu ray writer - pioneer 12x 
CoolingOSKeyboardPower
NH-D14 SE2011  win 8 pro 64 bit sidewinder x4 Microsoft Windows 1250w OCZ ZX series 
Case
nzxt phantom 820 
CPUMotherboardGraphicsRAM
QX6700 P5K Deluxe/WiFi-AP ATI 2900xt 1GB DDR4 Ballistix 8GB PC2-8500C5 (BL2KIT12864AA1065) 
Hard DriveOptical DriveOSPower
2x WD Raptor WD1500ADFD 150GB SATA 10KRPM Samsung SH-S183ABEBN DVD±RW Dual Layer windows 7 pro Thermaltake Toughpower 1200W Modular PSU 
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post #3 of 6
You have to calculate latency time basically using the cas and clock speed. in general higher clock speed will have less latency time even with higher cas values

2133 MHz at cas11 is still an improvement over 1600 MHz at cas9, in general.

For your specific application I'm not sure what is better. Both clock speed and latency are important but in specific cases the best settings may differ. At the end of the day it may not make much of a noticeable difference.

Since you have two kits instead of one, you may not be able to overclock as high. This is because if you have kits A and B, and A clocks higher than B, you have to run at B's speed. That's all. I don't see why you would ever have to underclock, I would return memory if I couldn't run it at the advertised speed.

Check out the chart in this article: http://en.wikipedia.org/wiki/CAS_latency
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post #4 of 6
Quote:
Originally Posted by MME1122 View Post

Since you have two kits instead of one, you may not be able to overclock as high. This is because if you have kits A and B, and A clocks higher than B, you have to run at B's speed. That's all. I don't see why you would ever have to underclock, I would return memory if I couldn't run it at the advertised speed.

There are setups that will not run memory, especially large amounts of memory, at rated speed, without anything being wrong with the RAM at all.

The board I just replaced cannot clock 8 DIMMs higher than DDR-1700 or so, but every one of the sticks is individually capable of about DDR-2400, and the board/CPU can handle four of them at ~2200.
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post #5 of 6
Thread Starter 
Yer bummer...guess it's a bit of a gamble I'll probably go for low cas 1600 and check the returns policy!
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i7 3930k @ 4.6ghz Asus p9x79 pro ATI R9 290 4GB sapphire tri x OC ATI R9 290 4GB sapphire tri x OC 
RAMHard DriveHard DriveHard Drive
64gb Ballistix VLP sport 1600 mhz 9-9-9-24  Samsung 840 pro (OS drive) Samsung 840 pro (Cache drive) Seagate constellation es 1tb (RAID 10) 
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nzxt phantom 820 
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2x WD Raptor WD1500ADFD 150GB SATA 10KRPM Samsung SH-S183ABEBN DVD±RW Dual Layer windows 7 pro Thermaltake Toughpower 1200W Modular PSU 
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New rig
(17 items)
 
My old System
(13 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3930k @ 4.6ghz Asus p9x79 pro ATI R9 290 4GB sapphire tri x OC ATI R9 290 4GB sapphire tri x OC 
RAMHard DriveHard DriveHard Drive
64gb Ballistix VLP sport 1600 mhz 9-9-9-24  Samsung 840 pro (OS drive) Samsung 840 pro (Cache drive) Seagate constellation es 1tb (RAID 10) 
Hard DriveHard DriveHard DriveOptical Drive
Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) blu ray writer - pioneer 12x 
CoolingOSKeyboardPower
NH-D14 SE2011  win 8 pro 64 bit sidewinder x4 Microsoft Windows 1250w OCZ ZX series 
Case
nzxt phantom 820 
CPUMotherboardGraphicsRAM
QX6700 P5K Deluxe/WiFi-AP ATI 2900xt 1GB DDR4 Ballistix 8GB PC2-8500C5 (BL2KIT12864AA1065) 
Hard DriveOptical DriveOSPower
2x WD Raptor WD1500ADFD 150GB SATA 10KRPM Samsung SH-S183ABEBN DVD±RW Dual Layer windows 7 pro Thermaltake Toughpower 1200W Modular PSU 
Case
Antec P180-b 
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post #6 of 6
Thread Starter 
Ah ok I see now the higher mhz does turn out to be faster as long as I keep the speed up ...well fingers crossed...

Ps that's with a 3930k - anyway I hope the limits of the x79 pro don't slow the ram as some people say above 1600 is not worth it...probably end up being almost the same just depends what's best at 64gb guess...

I even think they might be the the same kit with different ratings redface.gif
Edited by dpl2007 - 12/6/12 at 3:25pm
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i7 3930k @ 4.6ghz Asus p9x79 pro ATI R9 290 4GB sapphire tri x OC ATI R9 290 4GB sapphire tri x OC 
RAMHard DriveHard DriveHard Drive
64gb Ballistix VLP sport 1600 mhz 9-9-9-24  Samsung 840 pro (OS drive) Samsung 840 pro (Cache drive) Seagate constellation es 1tb (RAID 10) 
Hard DriveHard DriveHard DriveOptical Drive
Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) blu ray writer - pioneer 12x 
CoolingOSKeyboardPower
NH-D14 SE2011  win 8 pro 64 bit sidewinder x4 Microsoft Windows 1250w OCZ ZX series 
Case
nzxt phantom 820 
CPUMotherboardGraphicsRAM
QX6700 P5K Deluxe/WiFi-AP ATI 2900xt 1GB DDR4 Ballistix 8GB PC2-8500C5 (BL2KIT12864AA1065) 
Hard DriveOptical DriveOSPower
2x WD Raptor WD1500ADFD 150GB SATA 10KRPM Samsung SH-S183ABEBN DVD±RW Dual Layer windows 7 pro Thermaltake Toughpower 1200W Modular PSU 
Case
Antec P180-b 
  hide details  
Reply
New rig
(17 items)
 
My old System
(13 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3930k @ 4.6ghz Asus p9x79 pro ATI R9 290 4GB sapphire tri x OC ATI R9 290 4GB sapphire tri x OC 
RAMHard DriveHard DriveHard Drive
64gb Ballistix VLP sport 1600 mhz 9-9-9-24  Samsung 840 pro (OS drive) Samsung 840 pro (Cache drive) Seagate constellation es 1tb (RAID 10) 
Hard DriveHard DriveHard DriveOptical Drive
Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) Seagate constellation es 1tb (RAID 10) blu ray writer - pioneer 12x 
CoolingOSKeyboardPower
NH-D14 SE2011  win 8 pro 64 bit sidewinder x4 Microsoft Windows 1250w OCZ ZX series 
Case
nzxt phantom 820 
CPUMotherboardGraphicsRAM
QX6700 P5K Deluxe/WiFi-AP ATI 2900xt 1GB DDR4 Ballistix 8GB PC2-8500C5 (BL2KIT12864AA1065) 
Hard DriveOptical DriveOSPower
2x WD Raptor WD1500ADFD 150GB SATA 10KRPM Samsung SH-S183ABEBN DVD±RW Dual Layer windows 7 pro Thermaltake Toughpower 1200W Modular PSU 
Case
Antec P180-b 
  hide details  
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