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RAM bandwith, lacking?

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Just wondering if this is normal:

In everest read, i get around 7600MB/s with my 2GB (2x1GB) PC6400 RAM (comp specs to side) OC'd to 975Mhz (5-5-5-13)

Now, with a single stick of 1GB, in single channel mode, i get 6400Mb/s

I thought the difference from single to dual channel mode would be a lot bigger than that (1200Mb/s)...but im not too sure.

Also, from 1GB to 2GB, i only got 3 FPS extra in CS:source stress test (from 149 to 152 :p)...now im pretty sure that its because the stress test wouldnt use the whole 1GB, let alone 2GB

Yeah, but the main problem is the everest read....is that right?

Pinchy
 
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Sounds correct. When RAM is rated at pc2-6400, it means it has a maximum of 6400mb/s bandwidth. If you overclock it to 975mhz, the bandwidth should increase to 975*8 = 7800mb/s.

edit: in dual channel everything should be double what i just said
 
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yeah, thats what i thought

so why is it only getting an extra 1200Mb/s in Everest from single to dual channel :confused:
 
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Also, from 1GB to 2GB, i only got 3 FPS extra in CS:source stress test (from 149 to 152 )





http://www.3dcenter.org/artikel/2005/06-17_a.php
 
Joined
Apr 29, 2006
Messages
5,105 (0.78/day)
Location
Sydney, Australia
System Name UltraPC
Processor E8500 Core 2 Duo, 1333Mhz FSB, 3.16Ghz @ 4.5GHz (got into Windows @ 4.75GHz)
Motherboard ASUS P5Q-e
Cooling CPU Cooler - TT V14 Pro, 2x120mm CM Blue LED fans, 1x90mm CM Blue LED fan
Memory G.Skill Pi 4GB (2x2GB) Dual Channel DDR2 PC8000 (1000MHz), 5-5-5-15
Video Card(s) Sapphire HD4850 512mb with ASUS EAH4850 BIOS
Storage 2x 500GB Seagate 7200.12 Raid 0
Display(s) Acer AL1912, 19" LCD screen
Case Thermaltake Soprano Black ATX case
Audio Device(s) Onboard 7.1, Speakers - 5 + Sub + Monitor speakers
Power Supply Thermaltake 850W Toughpower Cable Management - Quad (2x18A and 2x30A) 12V rails
Software Win 7 Pro x64, MSN, CS:Source, etc etc
:)

Thanks for that peach! That gets the CS thing off the list :p

But still wondering about the single vs dual in everest, cus even from the memory benchmark competition in TPU, my results seem a little low
 
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