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Is 40mhz a big difference?

Last response: in Graphics & Displays
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January 7, 2013 9:52:52 PM

Hello, I'm looking to purchase a 7850 and I found two:

http://www.newegg.com/Product/Product.aspx?Item=N82E168... (Sapphire)
http://www.newegg.com/Product/Product.aspx?Item=N82E168... (XFX)

The Sapphire's core clock is 900mhz, instead of the XFX which is 860. Is this a big difference? The Sapphire card is only 5 bucks more, so for now I have my mind set to it. I've also almost never heard negativity about Sapphire, and I heard their methods of cooling are great, too.

More about : 40mhz big difference

a c 82 U Graphics card
January 7, 2013 9:54:30 PM

for 5$ whynot, id say its worth it

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Best solution

January 7, 2013 10:21:48 PM

It doesn't much but for 5 dollars, it's a good deal. Plus, Sapphire is a better card overall, so you are better off with a Sapphire card. Hope that helped! :) 
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January 8, 2013 3:36:00 AM

Best answer selected by MeicoPotato.
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a b U Graphics card
January 8, 2013 4:25:23 AM

Just a extra note but its always good to think of things in percentages. The 40mhz means the sapphire is 4.65% faster than the xfx. The cost is $5 which is a 2.85% difference. So for a 2.85% in price you theoretically get 4.65% more performance.


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January 8, 2013 11:38:45 PM

No! That is a misleading information. Clock speed is only one aspect of a video card so its not going to give you 4.65% more performance it will only give you that much more clock speed. There are so many things to consider when buying a new graphics card.
stickmansam said:
Just a extra note but its always good to think of things in percentages. The 40mhz means the sapphire is 4.65% faster than the xfx. The cost is $5 which is a 2.85% difference. So for a 2.85% in price you theoretically get 4.65% more performance.
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a b U Graphics card
January 8, 2013 11:50:49 PM

I did mention theoretically and it is considering cards that are almost the same in other regards
Its like saying a CPU clocked at 1.1ghz is 10% faster than if the same cpu is clocked at 1ghz. There are other restraints to performance like memory bandwidth, pcie neadwidth etc.

http://www.techpowerup.com/reviews/Gigabyte/HD_7770_OC/...

Not the best example to support my thoughts but here we have a card that is clocked 10% faster and it is giving about 8.7% more performance in most resolutions. It is not a perfect co-relation between clock speeds and performance but there is a high co-relation in most cases
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January 9, 2013 1:46:19 AM

Misunderstanding...
stickmansam said:
I did mention theoretically and it is considering cards that are almost the same in other regards
Its like saying a CPU clocked at 1.1ghz is 10% faster than if the same cpu is clocked at 1ghz. There are other restraints to performance like memory bandwidth, pcie neadwidth etc.

http://www.techpowerup.com/reviews/Gigabyte/HD_7770_OC/...

Not the best example to support my thoughts but here we have a card that is clocked 10% faster and it is giving about 8.7% more performance in most resolutions. It is not a perfect co-relation between clock speeds and performance but there is a high co-relation in most cases
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