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Windows 7 64bit and reserved ram

Last response: in Memory
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January 17, 2012 7:09:59 PM

Hey guys, im very new to the site but ive used this site in the past for solving other pc problems ive had. i can't seem to find the answer for this one but.

Ok, recently i upgraded from 4gb to 6gb of ram there the same speed voltages infact they are the same brand and model. my problem is my bios only show 4gb memtest shows 4gb but all the windows utilities show 6gb but 2 gb is reserved for hardware (graphics card im guessing). do any of you know the fix for this as ive never had ram reserved before i upgraded. my ram is 2gbx3 corsair DDR2 Xms my mobo is a Gigabyte EP41-UD3L my gpu is evga gtx480.

list of things ive tired.
update bios
set max ram in msconfig
reseat cpu and ram
swap ram around in the sockets
memtest

im really lost is anyone has any feedback that would be great.
January 17, 2012 7:12:09 PM

Hm, is your onboard video still enabled?

Also... you are now no longer running your memory in dual-channel mode. This is NOT ideal, as dual channel mode will increase performance... you would want another stick of memory to fill all slots.
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January 17, 2012 7:13:05 PM

To be honest i dont know, how do i tell.
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January 17, 2012 7:17:07 PM

Well it doesn't even have onboard video so throw that out...
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January 17, 2012 7:18:27 PM

damn, thought i may of had a fix then. oh well also everyone says to just enable remapping in the bios but my bios doesnt have that.
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January 17, 2012 7:19:00 PM

Scratch this post... you've tried this (need to read your OP better :( )
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January 17, 2012 7:20:16 PM

Thanks for your help but ive already tried using msconfig
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January 17, 2012 7:22:26 PM

Maybe you need to run the system in dual-channel mode by buying another 2gb stick of RAM :/ 
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January 17, 2012 7:22:40 PM

ok so system properties resourse monitor and cpu z all say theres 6gb in my system but is also says 2gb is reserved. sigh.
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January 17, 2012 7:26:35 PM

ive got 8gb but my system wont post with 8 in, i couldnt solve that problems so i took some ram out. what happens is i get the bios beep saying memory error or when windows starts to load it crashes
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January 17, 2012 7:32:05 PM

Hm, bad stick of RAM ;_;?

Do you have Windows 7 64-bit or 32-bit? or Windows 7...
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a c 347 } Memory
a b $ Windows 7
January 17, 2012 7:35:54 PM

Some of the older MOBO require the Channels to be equal sized otherwise it's not uncommon for (1) DIMM to be shut-off.

Next I noticed you said 8GB??!!

Q - What exact RAM do you have? ; please provide a link(s) to your RAM.
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January 17, 2012 7:38:42 PM

about to up my voltages and double check my ram timing, ill look into unlocking the remapping settings
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January 17, 2012 7:56:29 PM

well it doesnt post with timings change, its all Corsiar 2gb sticks 4 of them. so i dont see how it could be mismatched ram. faulty ram may be the problem but i hope not cause i just brought it.
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a c 347 } Memory
a b $ Windows 7
January 17, 2012 8:19:56 PM

TWIN2X4096-6400C5C ; 1st post my ram is 2gbx3 corsair DDR2 Xms
DDR2-800 5-5-5-18 @ 1.80v

Gigabyte EP41-UD3L - http://www.gigabyte.com/products/product-page.aspx?pid=...

Installed:
CPU: | Set 1 | Set 2 | Set 1 | Set 2 | ; regardless

BIOS:
Load Optimized (F7)
System Memory Multiplier -> 3 ; if CPU Host Frequency = 266MHz otherwise {800 / CPU Host Frequency}
DRAM Timing Selectable -> Manual
CAS Latency Time -> 5 ; 6 if failure
tRCD -> 5 ; 6 if failure
tRP -> 5 ; 6 if failure
tRAS -> 18

DRAM Voltage -> 1.85v~1.90v ; +0.05v~+0.10v with all DIMM slots populated

Save and Exit = Yes
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January 17, 2012 9:17:13 PM

i did all that, nothing changed while it did boot on both timings.
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a c 347 } Memory
a b $ Windows 7
January 17, 2012 9:44:14 PM

Just noted something very weird on page 16 of your manual. If you have ALL (4) DIMM slots filled then ONLY (SS) Single Sided RAM works!

(DS) Double Sided is limited to (2) DIMM Slots. Pretty sure the Corsair is (DS) RAM.

Pull one of the sticks and look if it has chips on one or both sides...
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