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Upgrade from 8400 gs to gt 640

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  • Graphics Cards
  • Graphics
Last response: in Graphics & Displays
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December 1, 2012 10:43:05 AM

Hi, I have a very important to ask . My cpu is using msi 8400gs 512mb (2008) and now i want to upgrade it to gigabyte gt640 2gb ddr3 .But i do not know that my motherboard support or not and i fear that it no work . please help me because it make stress now ... Here is my pc information motherboard : msi boston 1.0 / PCI-E 1.1 processer : core 2duo e4600 2.4ghz ram : 3gb ddr2 window vista 32bit sp2 graphic card : nvidia 8400gs 64bit 512mb (msi) HELP !!! I scare that GT640 is use PCIE 3.0 and my is PCIE 1.1 and it cannot work as all PLEASE HELP ME T.T

More about : upgrade 8400 640

a b U Graphics card
December 1, 2012 11:42:23 AM

Gt640 is Supported by your motherboard no problem with PCIE but I would recommend you to go for AMD 7750 or AMD 7770
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a b U Graphics card
December 1, 2012 11:58:20 AM



Not a proble, with PCIe.

And what is your budget ?
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December 1, 2012 12:24:16 PM

But I had try it , i had installed it but after i installed i open my pc and there are nothing display on the monitor
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a b U Graphics card
December 1, 2012 12:28:03 PM

You made something wrong ?Did you remove old dirvers and install new one ?
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a b U Graphics card
December 1, 2012 12:29:09 PM

Then you don't have a power supply that is powerful enough, you at least need 400 watt for that
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a b U Graphics card
December 1, 2012 12:29:58 PM

All graphic cards are backwards compatible. However, I don't think upgrading your GPU will make a difference. Your CPU, and computer for that matter, is pretty old. If you have the 640, that would be the max CPU that might be able to run with the c2d 4600. Honestly, I would look at doing a complete overhaul.
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December 1, 2012 1:17:07 PM

the true story is like this. today i went to the shop and i borrow my cpu too to upgrade my graphic to GT640 , however i let the workshop's men help me to install it , but after the installation done , the problem came out the cpu was produce some noisy soud like (tis..tis...tiss) repeat and repeat and non stop untill switch off the power.
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a b U Graphics card
December 1, 2012 1:22:40 PM

the CPU makes noise ????? Than send it back to him and tell him he didnt fix a ****.
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December 1, 2012 1:31:22 PM

now I dont know wht wrong with my computer , the computer really produce soud like(thi..thi) ..
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a b U Graphics card
December 1, 2012 1:51:32 PM

Well try getting near and hear it better !
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December 1, 2012 11:43:49 PM

my power is 350 W
the soud still produce but when install back my old graphic 8400gs , it go for normal can run window as normal without problem ...what wrong???
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a b U Graphics card
December 1, 2012 11:54:17 PM

Well u should really change it !
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December 1, 2012 11:59:34 PM

if i change back my 8400gs what doing for GT640 ? I very pray that it works :( 
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a b U Graphics card
December 2, 2012 12:02:46 AM

I mean change the PSU :D 
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December 2, 2012 12:14:03 AM

why isn't my PSU enough for my cpu ? or the problem is my PSU that procude soud?
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a b U Graphics card
December 2, 2012 12:16:23 AM

Well if it is a 350W its wont be a good brand. So it is a bad unit.

Go for Antec Vp450W for 30$ on ncix !
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December 2, 2012 12:20:02 AM

can I know the problem block me is the PSU or other items ?
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a b U Graphics card
December 2, 2012 12:22:41 AM

If you can hear it bette. Take you ear near the PSU and if the sounds come from there change it.

Also im sure it is the PSU. Its a 350 W PSU . Can you tell me the brand/model or read the label ?
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December 2, 2012 12:28:44 AM

i not sure the brand because the box has throw away i only remember it is 350w ...
I think ya the sound really come form PSU
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a b U Graphics card
December 2, 2012 10:32:07 AM

Well change it.

Antec Vp-450W 31$ ncix
Corsair CX 430 V2 35$ newegg

So just choose 1 of this and go game :p 
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December 3, 2012 6:23:12 AM

how about the PowerLogic magnum 375 pro power supply , pure power: 375w , peak power:750w
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a b U Graphics card
December 3, 2012 7:55:38 AM

No no no. What the **** is this PSU.

Get the one i told you. You dont need more W on that system.

Only if you go for high end PC (SLI/CF) you will need 750W
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December 6, 2012 8:37:16 AM

hey I plan to build another new cpu in this Xmas as well and this also my first time

here some information above it ,

MSI 970A-G46
AMD FX6100 3.3ghz
Kingston 1800mhz 8gb
Powerlogic magnum pro 535 max power 1000w (PSU)
WD 1.5TB
Samsung Internal 24X ATAPI DVD Writer SH-224BB
Aerocool Strike One PC Casing
Acer LCD Monitor S231HL 23-Inch LED 1920x1080


And a biggest problem is should i buy a new Sapphire HD 7750 2GB DDR3 or use back the GT640 ?
Can this works without facing any problem ??
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a b U Graphics card
December 6, 2012 12:10:10 PM

Well that CPU is nowhere near I3.

The PSU is just garabge.

You can find a better case.

You dont need 1800 for gaming

About the GPU 7750 is better but i would go higher cuz you have a 1080P monitor where non of this cards can game with good FPS
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December 7, 2012 1:07:00 AM

why the PSU is garbage ?
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a c 142 U Graphics card
December 7, 2012 3:53:37 AM

The power supply market is rife with low quality units that do not deliver what they promise in terms of wattage. These low quality units also deliver very inconsistent voltages, which can cause damage to your components. The worst case scenario is if you overstress these low quality power supplies is that they will explode and take other components with them.

Powerlogic is not a reputable power supply brand. Any "1000 Watt" unit that sells for cheap is going to be a very low quality unit that can probably only deliver 500 watts at best.

The power supplies suggested to you above come from much more reputable brands. They deliver what they promise, and are much higher quality parts that are much less likely to fail on you.
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December 7, 2012 4:11:12 AM

So therefore which type of PSU should i buy and how much watt to run the system ?
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a b U Graphics card
December 7, 2012 4:21:42 AM

as prototype mentioned earlier you will need
corsair cx 430 psu
or antec vp 450 psu.
first thing you must do now is change the psu to the one mentioned above as soon as possible and then try installing the gt 640 along with the latest drivers from nvidia and see whether your pc boots up.
i believe your current cpu e4600 should have no trouble running a gt 640 at all but first upgrade your psu and then try installing the gt 640. also dont forget to first un install the existing nvidia drivers and do a clean re install
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