Crap! Did I get Dual Channel?

[necrodreamer]

Hey guys, I think I screwed up. I have the IS7-G motherboard which supports dual channel DDR and ordered 2 of these exact mem sticks http://www.newegg.com/app/viewProductDesc.asp?description=20-146-946&depa=0 I was reading the forums here and realized to activate dual channel you must stick the modules in either slot 1&3 or 2&4 and I noticed that I had my sticks in slot 1&2. So, I used the software CPU-Z and it said on the mem tab that my mem was in single channel. So, I moved to 1&3, rebooted, and the system seems to be faster, although CPU-Z software says im still at single channel. Q is, is the mem I got not dual channel? Did I get the wrong mem? Or, is dual channel just a term used for 2 like modules?

 

[jammydodger]

Those two should work fine in dual channel mode, but it would have been better to buy a specially matched pair. Try runing a memory benchmark with them in slots 1&2 and then 1&3 to see if there i a big perfomance diff.

[Insert witty comment here]

 

[Crashman]

Any memory will dual channel, some with less stability than others.

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[pIII_Man]

i have heard of multiple instances where cpu-z falsley reports dual channel...

A benchmark that would clearly show if dc is enabled is sisofts memory bench. Basically if dual channel is enabled you will get about 6000mb/s bandwith and if it is disabled around 2900mb/s

If it isn't a P6 then it isn't a processor
110% BX fanboy

 

[necrodreamer]

Crap... I must have crap mem... but these damn things were expensive. This is in slots 1&3. Should I try putting them back in 1&2 or try 2&4? Is there something I need to possibly turn on in the BIOS to enable dual DDR? Also, why if I have two sticks of 512 are they showing as 4 sticks of 256? Please help guys!

SiSoftware Sandra

Benchmark Results
RAM Bandwidth Int Buffered iSSE2 : 2914MB/s
RAM Bandwidth Float Buffered iSSE2 : 2923MB/s

Int Buffered iSSE2 (Integer STREAM) Results Breakdown
Assignment : 2920MB/s
Scaling : 2919MB/s
Addition : 2905MB/s
Triad : 2912MB/s
Data Item Size : 16-bytes
Buffering Used : Yes
Offset Displacement Used : Yes
Bandwidth Efficiency : 91% (estimated)

Float Buffered iSSE2 (Float STREAM) Results Breakdown
Assignment : 2930MB/s
Scaling : 2932MB/s
Addition : 2913MB/s
Triad : 2918MB/s
Data Item Size : 16-bytes
Buffering Used : Yes
Offset Displacement Used : Yes
Bandwidth Efficiency : 91% (estimated)

Performance Test Status
Run ID : SPENCERROUYEA on Tuesday, March 09, 2004 at 12:54:48 AM
Memory Used by Test : 512MB
NUMA Support : No
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
Page Size : 4kB
Use Large Memory Pages : No

Chipset 1
Model : Abit Computer Corp 82865G/PE/P, 82848P DRAM Controller / Host-Hub Interface
Front Side Bus Speed : 4x 200MHz (800MHz data rate)
Width : 64-bit
Maximum Bus Bandwidth : 6400MB/s (estimated)

Logical/Chipset 1 Memory Banks
Bank 0 : 256MB DDR-SDRAM 3.0-4-4-8CL 1CMD
Bank 1 : 256MB DDR-SDRAM 3.0-4-4-8CL 1CMD
Bank 6 : 256MB DDR-SDRAM 3.0-4-4-8CL 1CMD
Bank 7 : 256MB DDR-SDRAM 3.0-4-4-8CL 1CMD
Channels : 1
Speed : 2x 200MHz (400MHz data rate)
Width : 64-bit
Performance Acceleration Technology : No
Maximum Memory Bus Bandwidth : 3200MB/s (estimated)