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 Recommendation, maintain or kill dual channel?

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TScjoey19
post Dec 22 2007, 09:29 PM, updated 18y ago

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Hi guys,

i have a tx1000 HP tablet, with 1GB (512mb x2) DDR2 SODIMM 667mhz ram.

i wanna up it to 2GB (at least, no 4gb, cant bother with 64bit)

so should i take a 2gb stick and sacrifice one 512 = 2.5GB without dual channel? how big performance impact does dual channel gives?

or should i take two 1GB sticks and sacrifice both 512 sticks and keep the dual channel config?

btw, are there any shops that take trade in ram?
jinaun
post Dec 22 2007, 09:31 PM

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if it supports flex memory (i'm assuming its running an intel chipset inside) it will support dual channel up to the size of the smallest memory of the pair, the remaining will be running on single channel.

QUOTE
Flex mode
This mode provides the most flexible performance characteristics. The bottommost DRAM memory (the memory that is lowest within the system memory map) is mapped to dual channel operation; the topmost DRAM memory (the memory that is nearest to the 8 GB address space limit), if any, is mapped to single channel operation. Flex mode results in multiple zones of dual and single channel operation across the whole of DRAM memory. To use flex mode, it is necessary to populate both channels.
http://www.intel.com/support/motherboards/...b/CS-011965.htm

This post has been edited by jinaun: Dec 22 2007, 09:41 PM
mgxbox
post Dec 22 2007, 10:05 PM

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QUOTE(cjoey19 @ Dec 22 2007, 09:29 PM)
Hi guys,

i have a tx1000 HP tablet, with 1GB (512mb x2) DDR2 SODIMM 667mhz ram.

i wanna up it to 2GB (at least, no 4gb, cant bother with 64bit)

so should i take a 2gb stick and sacrifice one 512 = 2.5GB without dual channel? how big performance impact does dual channel gives?

or should i take two 1GB sticks and sacrifice both 512 sticks and keep the dual channel config?

btw, are there any shops that take trade in ram?
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The choice is yours read the chart above. You can sell your ram in this forum "Garage Sales" Hope this help. smile.gif

This post has been edited by mgxbox: Dec 23 2007, 02:18 AM
herojack41
post Dec 22 2007, 10:35 PM

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@mgxbox
thanks for da info...finnaly i know da huge performance from dual channel brows.gif
LohMaiGai
post Dec 22 2007, 10:44 PM

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what i would like to say is, since you are planning to upgrade to 2GB 667Mhz ram, rather than taking 1 x 2GB, why don't you buy 2 x 1GB and make it dual channel? i think the price for 2 x 1GB will be cheaper compare to 1 x 2GB. btw you may ask to trace in or sell your 2 x512MB ram also
mgxbox
post Dec 23 2007, 02:13 AM

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QUOTE(herojack41 @ Dec 22 2007, 10:35 PM)
@mgxbox
thanks for da info...finnaly i know da huge performance from dual channel brows.gif
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You are welcome, dude. smile.gif
stanley85
post Dec 23 2007, 08:50 AM

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that is theory.. but when comes to use.. i wonder dual channel only gaining better performance by.. 5 - 15% ?? not sure abt this.
amduser
post Dec 23 2007, 10:55 AM

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QUOTE(cjoey19 @ Dec 22 2007, 09:29 PM)
Hi guys,

i have a tx1000 HP tablet, with 1GB (512mb x2) DDR2 SODIMM 667mhz ram.

i wanna up it to 2GB (at least, no 4gb, cant bother with 64bit)

so should i take a 2gb stick and sacrifice one 512 = 2.5GB without dual channel? how big performance impact does dual channel gives?

or should i take two 1GB sticks and sacrifice both 512 sticks and keep the dual channel config?

btw, are there any shops that take trade in ram?
*
i dont think it will be running in dual channel, and the dual channel is ntg much but just few % increase in performance, normally u cant feel it, and if u put 4GB is more better than running in 2GB dual channel...
mgxbox
post Dec 23 2007, 04:24 PM

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QUOTE(stanley85 @ Dec 23 2007, 08:50 AM)
that is theory.. but when comes to use.. i wonder dual channel only gaining better performance by.. 5 - 15% ?? not sure abt this.
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campsol2k
post Dec 23 2007, 04:47 PM

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Running Dual channel doesnt gives significant performance in games (around 1% or more). However, there are some advantages and significant performance gain when use it in few application, according to benchies. Bottomline is, it will never hurt if u use dual channel for a little performance gain.

This post has been edited by campsol2k: Dec 23 2007, 04:50 PM
TScjoey19
post Jan 3 2008, 12:43 AM

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wow, so many replies, lol.. thnx..

i am considering putting in a 2gb now, n adding a 2gb later, to complete the 4gb dual channel config because i'm a student, real tight on budget, tat could be 3-6 months later.. lol, and besides, the price is just 30 bucks different (for 2x 1GB and 1x 2GB, so i'm more future proof? lol)

and the notebook is amd chipset, so no flex memory i guess? lol..

so basically d performance hit isnt too big to be noticed in real world performance? i know the difference between the numbers in benchies n bandwidth. but in real world, i rather ask the pros properly... lol

and btw, is 64bit still a problematic? this notebook is known to only see 2.8gb out of 4gb in 32bit.
Chalcedony
post Jan 3 2008, 02:30 AM

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2G of RAM > dual channel 1G RAM any time.
The performance of dual channel is only a few % more, but the minute a game or app starts disk thrashing the performance drop is noticeable.

The chart posted above by mgbox is just THEORETICAL output. It's just like AGP 8x vs AGP 4x/PCI-E 16x vs PCI-E 8x/SATA2 VS SATA. The theoretical output is much better but the real world performance is a whole other thing.

Link to back me up: http://www.tomshardware.co.uk/parallel-pro...w-29694-11.html

This post has been edited by Chalcedony: Jan 3 2008, 02:37 AM
fcuk90
post Jan 3 2008, 03:17 AM

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get 2gb ram stick ...save slot for future upgrade..
SUSMatrix
post Jan 3 2008, 09:18 AM

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Dual channel not much difference. The technical specs may looks impressive, but most of the time, you won't be streaming data constantly into RAM...and will hardly reach anywhere near top teorotical speed.

2GB single channel > 1GB dual channel anytime.

 

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