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Cas latency vs clock speed

post #1 of 5
Thread Starter 
Building a llano rig and wondering what is better. For $40 i can get 8gigs of cas 7 1066mhz ddr3 and for the same price i can get cas 9 1600 ddr3. Which should i pick?
 
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post #2 of 5
Quote:
Originally Posted by JLloyd13 View Post

Building a llano rig and wondering what is better. For $40 i can get 8gigs of cas 7 1066mhz ddr3 and for the same price i can get cas 9 1600 ddr3. Which should i pick?

With Llano, clock seed rules. cl9 1600mhz will be a massive improvement over cl7 1066mhz.

See the bit-teech test.

http://www.bit-tech.net/hardware/2011/07/06/the-best-memory-for-llano/1
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post #3 of 5
Thread Starter 
Thanks. That exactly what i was looking for, the 1600 it is!
 
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Western Digital 250GB (old sata1 drive) Lite-On 24x DVD Burner Linux Mint 12, Windows Server 2003 Dell 450watt 
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Old Dell Case 
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On the Go
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CPUMotherboardGraphicsRAM
AMD A8-3870K ASRock A75M-HVS  AMD Radeon HD 6550D Patriot Sector 5 8GB (2x4GB) 1600MHz 
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Western Digital 250GB (old sata1 drive) Lite-On 24x DVD Burner Linux Mint 12, Windows Server 2003 Dell 450watt 
Case
Old Dell Case 
CPURAMHard DriveOS
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post #4 of 5
Quote:
Originally Posted by JLloyd13 View Post

Thanks. That exactly what i was looking for, the 1600 it is!

NP! Enjoy your new rig. Llano is a great bang-for-your buck system.
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AMD FX 8320 ASUS M5A97 R2.0 ASUS 7770 DCII 1GB 16gb (2x8gb) Corsair Vengance @ 1600 10-10-10-2... 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128gb SSD Intel 320 80gb DROBO 10TB (5x2TB) NAS Corsair H100 
OSMonitorKeyboardPower
Windows 8 Catleap Q270 27" 1440p Razer Black Widow Ultimate Corsair CX750m 
CaseMouse
Danger Den Torture Rack Logitech G500 
CPUMotherboardGraphicsRAM
Intel 4670k 4.7ghz @ 1.4v ASUS Z87-Pro  HD 4600 4gb (2x2gb) Crucial 1600mhz DDR3 
Hard DriveCoolingOSPower
Generic 40gb Swiftech H220 + 2x Cougar Vortex Cf-v 12 @ 1400rpm Ubuntu 12.4 Corsair CX750m 
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DangerDen Torture Rack 
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Vishera
(14 items)
 
Haswell
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CPUMotherboardGraphicsRAM
AMD FX 8320 ASUS M5A97 R2.0 ASUS 7770 DCII 1GB 16gb (2x8gb) Corsair Vengance @ 1600 10-10-10-2... 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128gb SSD Intel 320 80gb DROBO 10TB (5x2TB) NAS Corsair H100 
OSMonitorKeyboardPower
Windows 8 Catleap Q270 27" 1440p Razer Black Widow Ultimate Corsair CX750m 
CaseMouse
Danger Den Torture Rack Logitech G500 
CPUMotherboardGraphicsRAM
Intel 4670k 4.7ghz @ 1.4v ASUS Z87-Pro  HD 4600 4gb (2x2gb) Crucial 1600mhz DDR3 
Hard DriveCoolingOSPower
Generic 40gb Swiftech H220 + 2x Cougar Vortex Cf-v 12 @ 1400rpm Ubuntu 12.4 Corsair CX750m 
Case
DangerDen Torture Rack 
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Reply
post #5 of 5
Llano APUs benefit from faster RAM frequency because both the CPU and GPU get a RAM speed bump. Latency on DDR3 RAM makes almost no difference compared to DDR or DDR2 RAM which runs at lower frequencies and thus has a long real time per cycle than with DDR3.
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