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Geforce GT 640 OC 75W TDP problem

Last response: in Graphics & Displays
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August 13, 2012 8:47:19 PM

Dear Tom's Hardware,

I would like to buy a Gigabyte GT 640 OC 2GB DDR5 PCI-X 3.0 videocard with 75W TDP! There is no power connector on it!!!

IT IS NOT for game! I buy this because of CUDA cores.
Adobe Photoshop and video editing...

My motherboard is MSI G41M-P28.
It has PCI-X 1.1 slot with max. 75W TDP!!!

Questions:

1., Can my motherboard PCI-X v1.1 slot handle this videocard with maximum TDP or not?

Problem is not with the Power Supply Unit but with the motherboard's PCI-X slot!
USUALLY these entry level video cards power consumption is 30-65W max.
And the PCI-X v1.1 slot WITHOUT an extra power connector can handle max. 75W TDP only!!!
BUT THIS CARD NEEDS THE MAXIMUM UPPER LIMIT when it is on FULL LOAD!

IS IT SAFE OR NOT? I don't want the slot to get overheated...

2., If I buy a motherboard with PCI-X 2.0 slot, THAT can handle 150W without an extra power connector.

IS IT TRUE OR NOT?


Thanks in advance!
a b U Graphics card
a b V Motherboard
August 13, 2012 9:00:04 PM

Try the HD 7750 with a TDP of 55 watts.
a c 106 U Graphics card
a b V Motherboard
August 13, 2012 9:02:26 PM

I heavily recommend against buying a gtx 640 as it is more expensive than a 7750 and performs worse due to its DDR3 limitation.(then i realize theres a ddr5 version)
Related resources
August 13, 2012 9:28:12 PM

I know ATI would be BETTER in price and speed! ANYWAY it is DDR5!

But I forget to mention that I buy this card because of CUDA cores!!!
Adobe Photoshop and video editing. SO NVIDIA is better for this.

BUT

If I would like to play games then ATI WOULD BE PERFECT!!!
August 13, 2012 10:13:38 PM

mayafree said:
Dear Tom's Hardware,

I would like to buy a Gigabyte GT 640 OC 2GB DDR5 PCI-X 3.0 videocard with 75W TDP!
There is no power connector on it!!!

My motherboard is MSI G41M-P28. It has PCI-X 1.1 slot with max. 75W TDP!!!

Questions:

1., Can my motherboard PCI-X v1.1 slot handle this videocard with maximum TDP or not?

Problem is not with the Power Supply Unit but with the motherboard's PCI-X slot!
USUALLY these entry level video cards power consumption is 30-65W max.
And the PCI-X v1.1 slot WITHOUT an extra power connector can handle max. 75W TDP only!!!
BUT THIS CARD NEEDS THE MAXIMUM UPPER LIMIT when it is on FULL LOAD!

IS IT SAFE OR NOT?

2., If I buy a motherboard with PCI-X 2.0 or 2.1 slot, THAT can handle 150W without an extra power connector.
IS IT TRUE OR NOT?


Thanks in advance!


First if you need cuda the 640 will be a good choice for your pcie1.1 board, the 7750 would be better for everything else and will also work.

http://www.tomshardware.com/reviews/geforce-gt-640-revi...

It is true that m/b with pcie 2.1 can handle 150watts, 6pin adds another 75 or 8pin adds 150 watts.


August 13, 2012 10:54:25 PM

tourist said:
By the way that Gigabyte GT 640 OC 2GB DDR5 is it a oem ? because on giga site the only retail version is ddr3...


Yeah I saw it also! Strange...

It is TRUE original GIGABYTE! And only available in a few computer shop. :??: 
a b V Motherboard
August 14, 2012 1:50:50 AM

It seems like it is DDR3 not DDR5, google it and it comes back with OP's posts on techreport, overclock.net and toms. Also some 'other websites', seems that they have just put in the wrong details.

The part number on these websites goes to Gigabyte with DDR3.
February 10, 2014 9:02:20 PM

i dont know about you, but last year i bought this GT640 OC thing. problematic.
suddenly it takes 10 times longer to enter OS. i cannot enter my bios as well (and my motherboard doesnt have onboard vga). sometimes my computer works funny and doesn't detect some of components (e.g. dvd drive, few usb slots, etc).

a b V Motherboard
February 11, 2014 1:12:46 PM

Seems like you have a few problems. This is a dead thread though, if you want help then create a new thread.
February 12, 2014 7:40:56 PM



thank you panopticon! apparently the solution was simply upgrading the bios LOL
I just learned that i can upgrade bios from running windows -_-" now i can enter the bios again after update, yay!
!