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[tcMag] Radeon HD 4850 & 4870 in pretty pixels - Page 2

post #11 of 25
Quote:
Originally Posted by Brutuz View Post
Difference is, ATI had to, and didn't make as many cards from the one core, they made the 2900XT, then the HD3870 which was shrunk, then stuck two on the one PCB, Whereas nVidia got 8800GTX, Shrunk it into G92, made a couple new cards, then made a new series, which was just those previous cards, overclocked, then put two on the one PCIe slot, and called it a new series.

At least the HD3xx0 series had some improvements over the HD2xx0 series (Less heat, Power usage, etc)

And nVidia are just going "BIGGER IS BETTER!" and adding stuff, ATI are going "Ok, Here's our biggest weakness, lets pump that up first..."
What you've said is that the difference is in the attitude.

It's obvious that nVidia screwed up with 8800GT and 8800GTS 512, and that's exactly why they gave up lower end 9800-series and left us with only the GTX and GX2. To me it's just a naming error.

Alright, let's count the number of cards then:

8800GTX 768
8800GTS 320/640
8800GT 256/512
8800GTS 512
8800GS 384
9800GTX 512
9800GX2 1024

HD2900XT 512/1024
HD2900Pro 512/1024
HD2900GT 256
HD3850 256/512
HD3870 512
HD3870X2 1024

So nVidia had 1 more card of the same thing than ATi did. Big deal. As far as performance goes (aside from 3DMark), it doesn't take more than a 8800GT to beat all but the 3870X2, where the 9800GX2 steps in. And at consumer level, performance is key.

It still doesn't change the fact that they're both inflating their current architectures.
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post #12 of 25
Quote:
Originally Posted by SerenityKill3r View Post
Thing that will cripple the 4870 though is the 256 bit bus..., whereas the GTX280 has a 512 bit bus...although at almost half the price, it looks like it will almost perform the same telling from the spec sheets we've been seeing...
4870 will have around the same ammount of bandwidth then GTX 280. The end.
post #13 of 25
Quote:
Originally Posted by Ikon View Post
4870 will have around the same ammount of bandwidth then GTX 280. The end.
QFT. The difference in badnwidth between the 4870 and 280 is about 17GB/s, despite the fact that the 280 has double the bus width.
post #14 of 25
Quote:
Originally Posted by darkcloud89 View Post
QFT. The difference in badnwidth between the 4870 and 280 is about 17GB/s, despite the fact that the 280 has double the bus width.
Indeed, the 4870 is actually supposed to have more bandwidth than the GTX 280.

My question is, if the 4870 takes two 6 pin power connectors, what is the 4870x2 going to need?
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post #15 of 25
Quote:
Originally Posted by Ikon View Post
4870 will have around the same ammount of bandwidth then GTX 280. The end.
Quote:
Originally Posted by darkcloud89 View Post
QFT. The difference in badnwidth between the 4870 and 280 is about 17GB/s, despite the fact that the 280 has double the bus width.
To elaborate, this is due to the 4870 having higher-clocked GDDR5.

Think of a freeway. 4870 is like a freeway with less lanes but higher speed limit, and GTX 280 is like a freeway with more lanes but lower speed limit.
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post #16 of 25
Quote:
Originally Posted by alexgheseger View Post
Indeed, the 4870 is actually supposed to have more bandwidth than the GTX 280.
Actually, it's the GTX280 that ends up having 17GB/s more than the HD4870, but I think the bandwidths are close enough that they won't be the deciding factor.

Quote:
My question is, if the 4870 takes two 6 pin power connectors, what is the 4870x2 going to need?
Well, the HD4870 requires 157W which is just 7W beyond what a single 6-pin connector can provide (if I remember correctly). So, if they can manage to get the power consumption down just a little bit for the X2, I would guess it will have a 6pin + 8pin.
post #17 of 25
Quote:
Originally Posted by darkcloud89 View Post
Actually, it's the GTX280 that ends up having 17GB/s more than the HD4870, but I think the bandwidths are close enough that they won't be the deciding factor.



Well, the HD4870 requires 157W which is just 7W beyond what a single 6-pin connector can provide (if I remember correctly). So, if they can manage to get the power consumption down just a little bit for the X2, I would guess it will have a 6pin + 8pin.
Hehe, yeah you're right on all counts. I was looking at the specs for the GTX 260 .

Hopefully it's just a 6 and an 8 pin, I'd hate to have to upgrade my PSU to run quadfire.

thanks
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post #18 of 25
I hope the performance of these is close to the nvidia just for price wars!

These new ATI cards look very sexeh though!
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post #19 of 25
Quote:
Originally Posted by NuclearCrap View Post
What you've said is that the difference is in the attitude.

It's obvious that nVidia screwed up with 8800GT and 8800GTS 512, and that's exactly why they gave up lower end 9800-series and left us with only the GTX and GX2. To me it's just a naming error.

Alright, let's count the number of cards then:

8800GTX 768
8800GTS 320/640
8800GT 256/512
8800GTS 512
8800GS 384
9800GTX 512
9800GX2 1024

HD2900XT 512/1024
HD2900Pro 512/1024
HD2900GT 256
HD3850 256/512
HD3870 512
HD3870X2 1024

So nVidia had 1 more card of the same thing than ATi did. Big deal. As far as performance goes (aside from 3DMark), it doesn't take more than a 8800GT to beat all but the 3870X2, where the 9800GX2 steps in. And at consumer level, performance is key.

It still doesn't change the fact that they're both inflating their current architectures.

How can you forget 8800 Ultra the fastest card. Its not the number of cards its the naming. We have 6 models of 8800. Ati has 3 of 2900. and 2 of 3800
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post #20 of 25
Omg I Want.
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