Any one figure out what the heck is going on with the memory performance of the 875p ?
Verified with CUPID
Dual 512mb Corsair XMS 3200 running dual channel @ 400.9 mhz with a 3.0 800fsb CPU on the MSI NEO LSR.
cas 2.5, 3,3,6,4(bandwidth seems to not be affected no matter what these are changed to)
Tried all bios versions and still cannot achieve more than 4400-4500 in Sisoft Sandra memory benchmark (MSI's own website shows 5000 + with the exact same test)
Tried 2 512 sticks of kingston ddr 400 with same results
also tried 2.7v, no change
Also with the 1.4 bios, you can set the CAS latency to 2, but when you check it with CPUID, it says it is cleary running at 2.5
I urge everyone to run CPUID and the sandra memory benchmark to see what they results they get.
Sandra =
http://www.majorgeeks.com/getfileoc.php?file=92&site=4
CUPID =
http://www.majorgeeks.com/article.php?sid=425&cat=14
CPU-Z Report
--------------------------------------------------------------------------------
CPU-Z version 1.17.
Number of CPUs 2 (1 Physical)
CPU# 1
Cpu Name Intel Pentium 4 (Northwood)
Specification Intel(R) Pentium(R) 4 CPU 3.00GHz
Family / Model / Stepping F 2 9
Extended Family / Model 0 0
Brand ID 9
Package mPGA-478
Core Stepping D1
Technology 0.13µ
Supported Instructions Sets MMX, SSE, SSE2
Cpu Clock 3006.9 MHz
Clock multiplier x 15.0
Front Side Bus Frequency 200.5 MHz
Bus Speed 801.8 MHz
L1 Data Cache 8 Kbytes, 4-way set associative, 64 bytes line size
L1 Trace Cache 12 Kµops, 8-way set associative
L2 Cache 512 Kbytes, 8-way set associative, 64 bytes line size
L2 Speed 3006.9 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits
CPU# 2 (logical)
Cpu Name Intel Pentium 4 (Northwood)
Specification Intel(R) Pentium(R) 4 CPU 3.00GHz
Family / Model / Stepping F 2 9
Extended Family / Model 0 0
Brand ID 9
Package mPGA-478
Core Stepping D1
Technology 0.13µ
Supported Instructions Sets MMX, SSE, SSE2
Cpu Clock 3006.9 MHz
Clock multiplier x 15.0
Front Side Bus Frequency 200.5 MHz
Bus Speed 801.8 MHz
L1 Data Cache 8 Kbytes, 4-way set associative, 64 bytes line size
L1 Trace Cache 12 Kµops, 8-way set associative
L2 Cache 512 Kbytes, 8-way set associative, 64 bytes line size
L2 Speed 3006.9 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits
Motherboard manufacturer MICRO-STAR INC.
Motherboard model MS-6758, 00C
BIOS vendor American Megatrends Inc.
BIOS revision V1.4
BIOS release date 05/19/2003
Chipset Intel i875P rev. A2
Southbridge Intel 82801EB (ICH5) rev. 2
Sensor chip Winbond W83627HF
RAM Type DDR-SDRAM
RAM Size 1024 Mb
RAM Frequency 400.9 MHz
CAS# Latency 2.5 clocks
RAS# to CAS# 3 clocks
RAS# Precharge 3 clocks
Cycle Time (TRAS) 6 clocks
# of memory modules 2
Module 0 Corsair DDR-SDRAM PC3200 - 512 Mb
Module 1 Corsair DDR-SDRAM PC3200 - 512 Mb
AGP Status enabled, rev. 3.0
AGP Data Transfert Rate 8x
AGP Side Band Addressing supported, enabled
AGP Aperture Size 256 Mb
Windows version Microsoft Windows XP Service Pack 1 (Build 2600)
------------------------------------------------------------------------------------------------------------------------
SiSoftware Sandra
Int Buff iSSE2 (Integer STREAM) Results Breakdown
Assignment : 4402MB/s
Scaling : 4406MB/s
Addition : 4515MB/s
Triad : 4520MB/s
Data Item Size : 16-bytes
Buffering Used : Yes
Offset Displacement Used : Yes
Float Buff iSSE2 (Float STREAM) Results Breakdown
Assignment : 4407MB/s
Scaling : 4399MB/s
Addition : 4510MB/s
Triad : 4506MB/s
Data Item Size : 16-bytes
Buffering Used : Yes
Offset Displacement Used : Yes
Test Status
Memory Used by Test : 512MB
SMP Test : No
Total Test Threads : 1
SMT Test : Yes
Number of Test SMT (per CPU) : 2
Dynamic MP/MT Load Balance : No
Processor Affinity : No
Chipset
Model : Micro-Star International Co Ltd (MSI) Unknown (257
Front Side Bus Speed : 4x 200MHz (800MHz data rate)
Maximum Bus Bandwidth : 6400MB/s (estimated)
Features
MMX Technology : Yes
SSE Technology : Yes
SSE2 Technology : Yes
SSE3 Technology : No
HTT - Hyper-Threading Technology : Yes
!!!HEY MSI, would you like to explain why your 875p has less bandwidth than the 865 boards ? !!!
It looks like the hardware review sites got different boards than retail