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XMS2 DDR2 5400 running with very low bandwidth on GA-8ANXP-D


Josh Martin

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I recently replaced my Asus p5ad2-p with a Gigabyte GA-8ANXP-D. All of my other components (listed below) remain the same. With the Asus, I was scoring around 10700 on 3d Mark 03, which is a score in line with what I would expect.

 

p4 550 (3.4)

2 512 DIMMs of XMS2 DDR2 5400

120 gig Maxtor SATA HD

x800 pro

SB Audigy 2

latest bios (f5)

 

After replacing the p5ad2 with the GA-8ANXP-D (with a fresh install of XP), I am scoring around 8000 on 3d Mark 03, with my CPU test scores about 70% lower than with the p5ad2.

 

I ran Sandra 05's memory bandwidth tests and it shows my bandwidth as about 1.8 gigs/sec, far below what it should be.

 

I've tried moving the DIMMs around (from 1, 4 to 2, 5) and once (but only once) scored 10675 on 3d Mark 03. At the time, I didn't have Sandra installed, so I don't know what my bandwidth scores would have been then. The next time I rebooted, I was back to where I was before.

 

I've tried all different configurations of DIMM placement. I score the same in 3d Mark with either DIMM or with both running in single channel mode.

 

All my RAM settings are correct in the BIOS, and it claims the memory is running in dual-channel mode.

 

I really have no idea what could be causing this problem. I have an email into Gigabyte, but haven't heard back yet. If anyone has any suggestions, I'd love to hear them. :confused:

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I'm assuming it's BIOS, TBH.

 

You said you run "Auto" settings, why not manually input them, just to make sure they can't move?

 

Also might want to double-check the CPU settings, just in case it mis-detects something.

 

PLUR

CK

 

Thanks - I wasn't clear in my earlier post. I have tried the auto and manual settings.

 

CPU settings look fine and everything I check w/in Windows shows that the CPU is running at the right speed.

 

Also, I ran memtest overnight and no errors were reported (not surprising, since the memory ran fine with the previous mobo).

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Josh -

 

I recently built a box with the same MB and Mem and a P4/3.4 GHz 800M LGA775 550. I have the latest bios (F5) installed and have not changed any of the memory settings within the bios (used Optimized Defaults). I haven't even started to tweak anything as I'm just starting to create default baselines to work from.

 

My Sandra 05 mem bw tests yield:

SiSoftware Sandra

 

Benchmark Results

RAM Bandwidth Int Buff'd iSSE2 : 4944 MB/s

RAM Bandwidth Float Buff'd iSSE2 : 4936 MB/s

 

Int Buff'd iSSE2 (Integer STREAM) Results Breakdown

Assignment : 4820MB/s

Scaling : 4811MB/s

Addition : 5070MB/s

Triad : 5076MB/s

Data Item Size : 16 byte(s)

Buffering Used : Yes

Offset Displacement Used : Yes

Bandwidth Efficiency : 77% (estimated)

 

Float Buff'd iSSE2 (Float STREAM) Results Breakdown

Assignment : 4809MB/s

Scaling : 4794MB/s

Addition : 5067MB/s

Triad : 5075MB/s

Data Item Size : 16 byte(s)

Buffering Used : Yes

Offset Displacement Used : Yes

Bandwidth Efficiency : 77% (estimated)

 

Performance Test Status

Run ID : BEAN on Thursday, January 27, 2005 at 8:13:49 PM

Memory Used by Test : 512MB

NUMA Support : No

SMP Test : No

Total Test Threads : 1

Multi-Core Test : No

SMT Test : Yes

Dynamic MP/MT Load Balance : No

Processor Affinity : PP0

Page Size : 4kB

Use Large Memory Pages : No

 

Chipset 1

Model : Giga-Byte Technology 925x Memory Controller Hub

Front Side Bus Speed : 4x 201MHz (804MHz data rate)

Width : 64-bit

Maximum Bus Bandwidth : 6432MB/s (estimated)

 

Logical/Chipset 1 Memory Banks

Bank 0 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 1 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 2 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 3 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 4 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 5 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 6 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Bank 7 : 256MB DDR2-SDRAM 4.0-4-4-12 1CMD

Channels : 2

Speed : 4x 268MHz (1072MHz data rate)

Width : 64-bit

Performance Acceleration Technology : Yes

Maximum Memory Bus Bandwidth : 17152MB/s (estimated)

 

Features

(W)MMX Technology : Yes

SSE Technology : Yes

SSE2 Technology : Yes

SSE3 Technology : Yes

HTT - Hyper-Threading Technology : Yes

 

Hope that helps....

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