Windows 7 Ultimate 32-bit
Intel Core 2 Quad Q8300 2.5Ghz Processor
Asus P5Q SE2 Motherboard (BIOS 0801)
ATI Radeon 5770 512MB Graphics
Seagate Barracuda 7200.12 ST3500418AS 500GB Hard drive
Gigabyte Odin 585watt Power Supply
--> Zeppelin 1x2GB PC6400 Memory (single channel) 5-5-5-18 timings
My 3DMark Vantage CPU and GPU scores are both about 9450 which seems a bit low
I ran SiSoft Sandra Memory bandwidth test, which showed about 4.9GB/s which seems awfully low for a 800Mhz memory module. (It was compared to 533Mhz and 667Mhz memory modules)
So my question is will dual channel make a big improvement over single channel and if the memory i have installed is just a piece of junk ?
Its a dual channel architecture motherboard, 1 DIMM per channel = single channel.
If you can run a dual channel config then do so, Intel implementations work well in this configuration with certain applications. For real world performance gains, it is debateable if it is really any better. For example your web browsing or gaming performance may not change. You could try both and compare benchmarks. I wouldn't expect much.
That being said, more memory certainly WILL improve performace.
Though that article is from back in 2007 and I'm pretty sure things have changed a bit since then -- it would be interesting to see an updated article on the impact of single vs. dual mode with all other variables remaining the same.
The main difference would be using a Quad core processor and more current chipsets. It would be very interesting to see what the delta is between single and dual channel on a more current platform.
The original poster, if they actually do go out and buy another 2GB module could easily test this on thier rig. Put both pieces in the same channel, run some benchmarks and then put each piece in a different channel (single mode) and run same benchmarks.
The caveat in all this is that you run 'real world' benchmarks. Simply running the memory bandwidth test/benchmark is of course going to illustrate the difference more drastically. But what I have been driving at is what does it really mean in terms of practical performance gains?