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Nvidia GTS 450 SLI

by David_MKD / July 28, 2011 2:31 AM PDT

Hello, I want to ask you couple of questions. I have GTS 450 2GB DDR3
and I want to put GTS 450 GDDR5 1GB, will it work as a SLI ? The second
question is if I put 2 GTS 450 (mine the 2GB edition and GDDR5 1GB
edition) without that SLI will the gaming performance improve or it will
remain the same ? The third question is Can I use different GPU as a
SLI example GTS 450 and GTX 460? The Fourth question is can I use 550W
PSU for those 2 GTS 450 ? Thanks in advance

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All Answers

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Answer
The problem to question 1, 2 and 3 is support.
by R. Proffitt Forum moderator / July 28, 2011 2:41 AM PDT
In reply to: Nvidia GTS 450 SLI

All the support I know of will not give support (*good support!) for mismatched cards even if they work. Since it's not well supported my advice is don't do this.

As to the power supply I use a few tools to figure this out. First I look at the Amperes on the RAILS and see if my cards will exceed some rail total current. Next I use a P3 Watt Meter on the system and see how many Watts the system uses while the game is running (that's a 20 buck thing!)

Armed with those numbers I can make a decision if a new power supply is needed. I never want to get close or over 70% of the rated power of the PSU. The P3 Watt meter is the input power so worst case is 80% efficiency so I pull back to 70 per cent.

Hope this helps.

Ok, what I would do? I'd head to http://www.tomshardware.com/reviews/best-graphics-card,2964.html and see how much card I can get for the money I allocated and then compare my old card to the new card.
Bob

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Question 1 and 2
by David_MKD / July 28, 2011 2:54 AM PDT

I am more worry about the GPU. Mine is 2Gb ddr3 and the one that I want to buy is GDDR5 1GB will it work?

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Let's try it this way.
by R. Proffitt Forum moderator / July 28, 2011 11:43 AM PDT
In reply to: Question 1 and 2

Ask the maker and seller. If they say Yes and will let you return the product if it fails, then you are good to go.

If they won't answer or won't accept returns, don't do it.
Bob

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