how do I know about dual channel?

[holycpu]

ok, local comp store build this rig for me and they screw up alot * and accuse me OCing my comp while they give me a BIOS locked computer.

I brought 2 gb of ram, only get 1 gb back n they say i only bring 1 gb.....

I told them to exchanges the fans for me on e-mail, they said OK but when I get my system, they said oh, you can change it urself, they are too lazy to do it.....

So there is a lesson, NEVER go to a local comp store that your tutor/relative/friends say "I know the manager who work for that store" cux if it screw up, you can't complain/argue cux you don't want things to turn ugly.

I got 2 x 512MB ram, and I specifically ask them to run it in dual channel...so I want to ask, how can I check if those 2 sticks of mine are running in dual channel? Where can I tell from my computer? What program can show me that I am actually running my ram in dual channel?

CPU= 3700+ San Diego


Thank You

 

[RichUK]

 

[Jeff7181]

Return the computer, get your money back, and build one yourself.
If you're going to buy a computer already assembled, do yourself a favor and get one from a major manufacturer like Dell, HP, Falcon, Alienware, etc.

Also never enter a transaction like that without getting everything in writing. Good reputation and trust doesn't go very far when you're spending $1000 of your hard earned money.

As far as the dual channel memory... it should tell you during the POST. If not, you can use something like SiSoft Sandra to verify with 100% certainty that it's running dual channel by having it check memory bandwidth. If you have less than 3200 MB/s memory bandwidth, it's not running dual channel.

 

[imported_g33k]

Originally posted by: Jeff7181
Return the computer, get your money back, and build one yourself.
If you're going to buy a computer already assembled, do yourself a favor and get one from a major manufacturer like Dell, HP, Falcon, Alienware, etc.

Also never enter a transaction like that without getting everything in writing. Good reputation and trust doesn't go very far when you're spending $1000 of your hard earned money.

As far as the dual channel memory... it should tell you during the POST. If not, you can use something like SiSoft Sandra to verify with 100% certainty that it's running dual channel by having it check memory bandwidth. If you have less than 3200 MB/s memory bandwidth, it's not running dual channel.

Good advice. The 3200 MB/s is about right for single channel mode. Dual channel should be about double that number.

 

[imported_Kensai]

Not always. Those are theoretical maximum limits. True dual-channel speeds will be somewhere in the 4000MB/s range.

 

[imported_g33k]

Originally posted by: Kensai
Not always. Those are theoretical maximum limits. True dual-channel speeds will be somewhere in the 4000MB/s range.

I get 6800MB/s with a pair of OCZ PC4000 running at 2-2-2 @ ddr500. Maybe it's because I'm running performance RAM?