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DDR2-800 speed?


DukeOfURL

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I just recently built this box, the motherboard supposedly supports DDR2-800 (Asus M2N32 SLI-Dx), and I got DDR2-800 ram from NewEgg, (2x512 XMS2 DDR-800) My question is, how do I confirm that the ram is actually running at 800 Mhz? I've heard that on some motherboards, if there's any problems, the ram falls back to 667.
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CPU-Z says that my memory is running at 368.3 MHz, should it not be running at 800 MHz? The SPD tab in Max bandwidth says PC2-6400 (400 MHz) I thought the ram I had was DDR2 800 which meant it ran at 800 MHz.

 

Please post your CPUz tabs. CPU, Memory and SPD tabs.

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Here's an edited version of the dump file. If you want any other info that isn't here, lemme know

 

 

-------------------------

CPU-Z version 1.38

-------------------------

 

Processors Map

------------------------------------------------------------------------------------

 

Number of processors 1

Number of threads 2

 

Processor 0

-- Core 0

-- Thread 0

-- Core 1

-- Thread 0

 

 

Processors Information

------------------------------------------------------------------------------------

 

Processor 1 (ID = 0)

Number of cores 2

Number of threads 2 (max 2)

Name AMD Athlon 64 X2 4200+

Codename Windsor

Specification AMD Athlon 64 X2 Dual Core Processor 4200+

Package Socket AM2 (940)

CPUID F.B.2

Extended CPUID F.4B

Brand ID 4

Core Stepping BH-F2

Technology 90 nm

Core Speed 2210.3 MHz (11.0 x 200.9 MHz)

HT Link speed 1004.7 MHz

Stock frequency 2200 MHz

Instructions sets MMX (+), 3DNow! (+), SSE, SSE2, SSE3, x86-64

L1 Data cache 2 x 64 KBytes, 2-way set associative, 64-byte line size

L1 Instruction cache 2 x 64 KBytes, 2-way set associative, 64-byte line size

L2 cache 2 x 512 KBytes, 16-way set associative, 64-byte line size

FID/VID Control yes

max FID 11.0x

VID range 1.125V - 1.350V

K8 Thermal sensor yes

K8 Revision ID 5.2

Attached device PCI device at bus 0, device 24, function 0

Attached device PCI device at bus 0, device 24, function 1

Attached device PCI device at bus 0, device 24, function 2

Attached device PCI device at bus 0, device 24, function 3

 

 

Chipset

------------------------------------------------------------------------------

 

Northbridge NVIDIA SPP190 (C51XE) rev. A2

Southbridge NVIDIA nForce 590 SLI rev. A2

Graphic Interface PCI-Express

PCI-E Link Width x16

PCI-E Max Link Width x16

Memory Type DDR2

Memory Size 1024 MBytes

Memory Frequency 368.4 MHz (CPU/6)

CAS# 5.0

RAS# to CAS# 5

RAS# Precharge 5

Cycle Time (tRAS) 18

Bank Cycle Time (tRC) 23

Command Rate 2T

 

 

Memory SPD

------------------------------------------------------------------------------

 

DIMM #1

 

General

Memory type DDR2

Manufacturer (ID) Corsair (7F7F9E0000000000)

Size 512 MBytes

Max bandwidth PC2-6400 (400 MHz)

Part number CM2X512A-6400

Manufacturing date Week 29/Year 06

 

Attributes

Number of banks 1

Data width 64 bits

Correction None

EPP no

 

Timings table

Frequency (MHz) 270 400

CAS# 4.0 5.0

RAS# to CAS# delay 4 5

RAS# Precharge 4 5

TRAS 13 18

TRC 15 22

 

 

DIMM #2

 

General

Memory type DDR2

Manufacturer (ID) Corsair (7F7F9E0000000000)

Size 512 MBytes

Max bandwidth PC2-6400 (400 MHz)

Part number CM2X512A-6400

Manufacturing date Week 29/Year 06

 

Attributes

Number of banks 1

Data width 64 bits

Correction None

EPP no

 

Timings table

Frequency (MHz) 270 400

CAS# 4.0 5.0

RAS# to CAS# delay 4 5

RAS# Precharge 4 5

TRAS 13 18

TRC 15 22

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CPU/6 is your CPU:Dram Ratio

 

Your CPU multiplier is 11 therefore your CPU:RAM ratio is 11:6.

 

Your DRAM has to run at a ratio or multiple of the CPU. You need to change the ratio to increase your DRAM speed.

 

Enter your BIOS --> Advanced --> CPU Configuration

 

Look for the Setting "DRAM Configuration"

 

You will have the options of "AUTO", "DDR2 400", "DDR2 5433", "DDR2 667", "DDR2 800".

 

Since you are running stock, you need to set this to DDR2 800.

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  • 2 months later...

interested in how this got resolved...im having the same probelm but with just one stick. and i cant download that program that was posted, link doesnt work.

 

i'm having a some trouble with the ram i got running at 667mhz rather than the 800mhz like its supposed to. im running a ASUS P5WD2-Premium mobo and the corsair XMS2-DDR (CM2X512A-6400). i noticed that in another thread someone said that maybe i need to go into the bios and change the settings to make it run at that speed but i am having absolutely no luck in finding these settings. i've tried contacting asus but they are too hard to get a hold of and i cant find anything on their site. what should i be looking for in the bios to change those settings?? some exact words would help. someone please help!!

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interested in how this got resolved...im having the same probelm but with just one stick. and i cant download that program that was posted, link doesnt work.

 

i'm having a some trouble with the ram i got running at 667mhz rather than the 800mhz like its supposed to. im running a ASUS P5WD2-Premium mobo and the corsair XMS2-DDR (CM2X512A-6400). i noticed that in another thread someone said that maybe i need to go into the bios and change the settings to make it run at that speed but i am having absolutely no luck in finding these settings. i've tried contacting asus but they are too hard to get a hold of and i cant find anything on their site. what should i be looking for in the bios to change those settings?? some exact words would help. someone please help!!

 

 

Actually, it hasn't been resolved, I just kind of gave up and ran out of time after a while. But I've been thinking of taking this issue up again.

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  • 2 weeks later...

Derek was trying to help me with the same issue. You may not like the resolution...

 

I've been dancing around with this for a couple months with ECS.

Turns out it's an AMD problem.

The am2 dual core 4200 that I have which runs at a multiplier 11 runs 800 MHz ram at 366.67 MHz by design...

 

Since this processor doesn't 1/2 step (11.5) we are stuck either running it at a multiplier of 10 or 12 to get the memory to 400 (x2=800).

Here's AMD's document on it. Pages 39-40.

http://194.122.91.123/manual/32559_3_05.pdf

If your bios lets you half step you may have some luck.

My ECS bios doesn't and I can't manually set memory timings either...but that's a whole other can of worms.

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