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Old 06-24-08, 04:51 PM   #121
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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Originally Posted by walterman View Post


The GTX280 has 3x times more ALU power than the 8800GTX, but only a 45% higher bandwidth, so, it really needs the extra bandwidth to shine as i would like to see.

I need something in the range of 200GB/s. Impossible with GDDR3.

And i cannot jump to ATi, cause they do not support the SSAA modes that i need.

So, i'm doomed to 1280x1024 again.

True,there is a lot more shader power in the GTX280,but shader operations as a general rule aren't really memory bandwith intensive operations anyhow....

32bit floating point blending operations do eat a ton of memory bandwith,but i'm not sure if the GT200 supports that or still sticks with 16bit for blending ops.
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Old 06-24-08, 05:53 PM   #122
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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They forgot one line there...GTX280 is fast and our card sucks in games.
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Old 06-24-08, 05:55 PM   #123
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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Originally Posted by shadow001 View Post
Well,keep in mind a few things though:


1:The performance gap between an HD4870 and the GTX280 is only about 15%.
2:Crossfire scaling from 1 to 2 GPU's is anyhwere from 50 to to 70%.(on supported games)
3:A single HD4870 easily beats a 9800GTX by a good 30~35%.
4:A 9800GX2 is basically 2 9800GTX's bolted together,but running at lower clocks.
5:An HD4870 X2 is basically 2 HD4870's bolted together too,but without clocks being lowered


So in all likelyhood,the HD4870X2 will not only outrun a GTX280 by a large amount,but even beat an 9800GX2 by a decent amount too,maybe even 30~35% there,since scaling on SLI and crossfire is pretty similar in terms of percentage gain overall.
Where the hell you got those numbers?

HD4850 is choking against 8800GTX. HD4870 is what overclocked version of HD4850? Give me a break. It's not even close to GTX260.
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Old 06-24-08, 06:00 PM   #124
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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That's Slappi to you!

You have to learn to embrace your fanboyism!

I embraced mine a long time ago.

Just breathe! AHHHHHH, yes let it in!! Baske in all that ATI redness!

You are like the gay guy at work who has a lot of "girlfriends", listens to a lot of Mariah, talks with a lisp and makes a lot of penis jokes but swears he's straight as an arrow.

Time for you, G-Man, to come out of the ATI Fanboy closet and embrace your true self.

Thank me later.
If you want to come out of the closet that's fine, i don't discriminate against gays but I do discriminate against idiots
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Old 06-24-08, 06:04 PM   #125
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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Originally Posted by Fotis View Post
First 4870 review by the chinese.Its seems to be beating the GTX260 most of the times by 5-30%.
HD4870 just sucks in DX10 games. Look at Lost Planet for example...heck even 8800GTS is hell of fast for half life 2 engine.
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Old 06-24-08, 06:16 PM   #126
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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Originally Posted by hell_of_doom227 View Post
HD4870 just sucks in DX10 games. Look at Lost Planet for example...heck even 8800GTS is hell of fast for half life 2 engine.
"Before you begin testing, there are a few points I want to convey about “Lost Planet”. “Lost Planet” is an Nvidia-sponsored title, and one that Nvidia has had a chance to look at and optimize their drivers for. The developer has not made us aware of this new benchmark, and as such the ATI Radeon driver team has not had the opportunity explore how the benchmark uses our hardware and optimize in a similar fashion. Over the next little while AMD will be looking at this, but in the meantime, please note that whatever performance you see will not be reflective of what gamers will experience in the final build of the game."
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Old 06-24-08, 06:25 PM   #127
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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Originally Posted by shadow001 View Post
True,there is a lot more shader power in the GTX280,but shader operations as a general rule aren't really memory bandwith intensive operations anyhow....

32bit floating point blending operations do eat a ton of memory bandwith,but i'm not sure if the GT200 supports that or still sticks with 16bit for blending ops.
Depends of the sort of game. New games are generally bounded by the shading power, but, when you raise the AF or AA, you need to read more texels from the textures, and combine more fragments in your ROPs, thus increasing the need for bandwidth.

Just check the performance of the GTX280. In some tests, it ends 2-3x times faster than the 8800GTX, but in others, only a 40-60% faster.

Personally, i need a lot of bandwidth to run my fav game at 1920x1200 with SSAA 2x and my framerate needs.

And yes, there is support for fp32 blending since the G80. On the G80, fp16 blending was half speed, and now it is full. So, i think that that fp32 should be half speed on the GT200.
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Old 06-24-08, 09:40 PM   #128
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

http://www.ibuypower.com/dri/ThreadD...?FID=2&QID=161 is the original thread

iBuyPower Testing and Overclock Team Presents:
ATI HD4870 Early Benchmarks



We here at iBuyPower got a hold of a few HD4870 engineering samples from the generous fellas at AMD, so we wasted no time and started to test them!

System Specifications:
CPU - Intel Yorkfield QX9770 @ 4.0 GHz
RAM - 2 x 1GB Mushkin DDR3-1800 PC3-12800 @ 7-7-6-18
Graphics - ATI HD4870 (Crossfire when specified)
Motherboard - Asus P5E3 Premium WiFi-AP @n Edition
HDD - 160GB Hitachi Deskstar
PSU - 1250W Cooler Master Real Power Pro
OS - Windows Vista 32bit

Stock ATI HD4870 Clocks: 750 core/900 memory

Single Card Benchmarks:
Temperatures:
Idle: 72-74C
Load: 80-83C

3DMark Vantage:
P9006
GPU: 7855
CPU: 16064

3DMark '06:
15994
GPU SM2.0: 5811
GPU SM3.0: 7271
CPU: 5689

Crysis Benchmark:
1280 x 1024 (No AA) @ High: 50.94
1600 x 1200 (No AA) @ High: 38.915
1600 x 1200 (2x AA) @ High: 35.185
1600 x 1200 (4x AA) @ High: 29.865
1280 x 1024 (No AA) @ Very High: 30.21
1600 x 1200 (No AA) @ Very High: 22.53
1600 x 1200 (2x AA) @ Very High: 19.505
1600 x 1200 (4x AA) @ Very High: 16.855

World In Conflict Benchmark:
1280 x 1024 (4x AA, 4x AF) @ Very High: 46.6 avg, 27.6 min, 78.6 max
1600 x 1200 (4x AA, 4x AF) @ Very High: 40.6 avg, 23.6 min, 69.3 max

Crossfire Benchmarks
Temperatures:
Idle: 68-70C
Load: 79-81C
(The slightly lower temperatures can be explained that we mounted more fans in the overall setup, while the single card only had one fan blowing into it)

3DMark Vantage:
P12261
GPU: 11390
CPU: 15913

3DMark '06:
21684
GPU SM2.0: 8070
GPU SM3.0: 10846
CPU: 5900

Crysis Benchmark:
1280 x 1024 (No AA) @ High: 53.205
1600 x 1200 (No AA) @ High: 48.35
1600 x 1200 (2x AA) @ High: 41.385
1600 x 1200 (4x AA) @ High: 34.01
1280 x 1024 (No AA) @ Very High: 38.63
1600 x 1200 (No AA) @ Very High: 32.085
1600 x 1200 (2x AA) @ Very High: 27.35
1600 x 1200 (4x AA) @ Very High: 24.16

World In Conflict Benchmark:
1280 x 1024 (4x AA, 4x AF) @ Very High: 51 avg, 26.3 min, 118.3 max
1600 x 1200 (4x AA, 4x AF) @ Very High: 48 avg, 26 min, 112 max

Other Notes:
The fan seems to run pretty slowly as well, which would explain the higher temperatures, even with a dual slot cooler. Taking out the PWM fan control blue pin from the fan connector lets the fan run at 100%, which is very loud but also takes a lot of the temperature off.

Coming Soon:
Quad Hybrid Crossfires with 2x HD4850s and 2x HD4870s with a Phenom 9950.
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Old 06-25-08, 03:33 AM   #129
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

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Originally Posted by hell_of_doom227 View Post
Where the hell you got those numbers?

HD4850 is choking against 8800GTX. HD4870 is what overclocked version of HD4850? Give me a break. It's not even close to GTX260.
Wrong. It's around 5-10% faster on average.

Now say sorry for spreading lies.
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Old 06-25-08, 04:11 AM   #130
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

The early results are looking good for the price and I'm not a fan of Crossfire or the Catamite Software Suite.
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Old 06-25-08, 07:08 AM   #131
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

No quad or triple CF benches yet? And Viral no need to feed the troll.
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Old 06-25-08, 08:58 AM   #132
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Default Re: Will Radeon HD 4870 turn up the heat on the GTX 280?

a repost of some benches

Quote:
4870 is a very solid card.






Strong Crossfire scaling






from http://www.anandtech.com/video/showdoc.aspx?i=3341&p=1

Thats allot of almost 100% Crossfire Scaling.
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