RV670 x2 on it's way

Sound_Card · Nov 15, 2007, 02:17 PM

http://www.legitreviews.com/article/593/1/

Jas420221 · Nov 15, 2007, 02:19 PM

Oh my!!!!! That thing should be a beast... Just what I was asking for! (not 3+ cards)

jam2k · Nov 15, 2007, 02:24 PM

Oh that looks sexy ...

Me wants !!

vertex_shader · Nov 15, 2007, 02:42 PM

Quote:

Originally Posted by Sound_Card

http://www.legitreviews.com/article/593/1/

This card can be another DOA product, like hd2600xt X2

Jas420221 · Nov 15, 2007, 02:45 PM

Quote:

Originally Posted by vertex_shader

This card can be another DOA product, like hd2600xt X2

Did you see any pictures of the 2600x2? Looks like its on an actual board VShader...

Sound_Card · Nov 15, 2007, 02:46 PM

Quote:

Originally Posted by vertex_shader

This card can be another DOA product, like hd2600xt X2

The problem with the 2600x2 was that it sucks. To put it bluntly. Now a x2 HD 3870 is something to write home about. Hoping it's not late that is like the x1950pro x2.

Burn · Nov 15, 2007, 03:12 PM

no one noticed that there's only one bridge connector ?

hummm..

AlexV · Nov 15, 2007, 03:35 PM

So this'll be my next purchase...or 4x3870s. Bahh, release it already, I need to buy some useless expensive stuff again, haven't done that in months...which makes me think about Phenom

SSXeon · Nov 15, 2007, 03:51 PM

Quote:

Originally Posted by Burn

no one noticed that there's only one bridge connector ?

hummm..

Even with the quad fire u only need one to connect each board.

Rombat · Nov 15, 2007, 04:04 PM

Wow is that going to be the actual size of the cards? I do hope they shrink it down more on the final product!

DnL · Nov 15, 2007, 08:28 PM

You go try to shrink a 55mm dual gpu pcb with current fab process... good luck

Hmm HD 3870x2 in Crossfire its nice IF AMD EVER FIXES CROSSFIRE properly =/

SSXeon · Nov 16, 2007, 12:12 AM

Quote:

Originally Posted by DnL

Hmm HD 3870x2 in Crossfire its nice IF AMD EVER FIXES CROSSFIRE properly =/

I believe they know this.

I hope 7.11s fix the crap crysis demo crossfire performance, like acually having atleast 60-70% increase over single.

Ristogod · Nov 17, 2007, 11:22 PM

OK, I'm wondering how soon and how much?

ECH1 · Nov 17, 2007, 11:27 PM

rumor has it that this might see a December release date. Only time will tell if this is true or not.

demo · Nov 18, 2007, 01:36 AM

im gonna get rid of my 2 2900XT's and replace them with these bad boys

3870x2 CF ftw!

SSXeon · Nov 18, 2007, 02:32 AM

Quote:

Originally Posted by Ristogod

OK, I'm wondering how soon and how much?

Q1/07 and around $400-450, i dunno for sure. It should only use the 8 pin for ocing like the 2900XT did.

Jas420221 · Nov 18, 2007, 02:35 AM

Quote:

Originally Posted by SSXeon

Q1/08 and around $400-450, i dunno for sure. It should only use the 8 pin for ocing like the 2900XT did.

Fixed.

Looks to be a monster card for its price...How is scaling on those things???

Scott · Nov 18, 2007, 03:38 AM

What's the price for the x2 expected to be?

Jas420221 · Nov 18, 2007, 03:55 AM

Quote:

Originally Posted by Scott

What's the price for the x2 expected to be?

Post #16.

xenomorph · Nov 18, 2007, 04:11 AM

lol so if you get two of those in Crossfire you'll be sitting on 1280 stream processors!

Dwarden · Nov 18, 2007, 04:29 AM

Quote:

Originally Posted by SSXeon

Even with the quad fire u only need one to connect each board.

erm

so i guess 3-4x X2 is not gunna happen w/o at least one board with two CFX connectors

still it's just detail ...

i would be fine with just X2 now ... (yesterday was too late again
__________________

SSXeon · Nov 18, 2007, 04:36 AM

Quote:

Originally Posted by Jas420221

Fixed.

Looks to be a monster card for its price...How is scaling on those things???

Thanx!

YOU KNOW WHAT I MEAN.

Quote:

Originally Posted by Dwarden

erm

so i guess 3-4x X2 is not gunna happen w/o at least one board with two CFX connectors

still it's just detail ...

i would be fine with just X2 now ... (yesterday was too late again
__________________

Like i said one connector per board.

JethroBodine · Nov 18, 2007, 07:08 AM

Quote:

Originally Posted by xenomorph

lol so if you get two of those in Crossfire you'll be sitting on 1280 stream processors!

That's true, but somewhat misleading as well.

The RV670's VLIW arch will never be able to use it's theoretical maximums because it can't run dependent instructions in parallel.

For DX10 and OpenGL only- DX9 has a 3 frame buffer limit that prevents 4 way AFR. (so less efficient tactics like "SFR of AFR" have to be employed) In this situation, I'd think 3 way CF would be preferable.

Nonetheless, looks good, I like solutions like this.

icecold1983 · Nov 18, 2007, 07:38 AM

quad fire and tri sli are both gonna have terrible scaling and wont be worth the money.

xenomorph · Nov 18, 2007, 08:18 AM

Quote:

Originally Posted by JethroBodine

That's true, but somewhat misleading as well.

The RV670's VLIW arch will never be able to use it's theoretical maximums because it can't run dependent instructions in parallel.

For DX10 and OpenGL only- DX9 has a 3 frame buffer limit that prevents 4 way AFR. (so less efficient tactics like "SFR of AFR" have to be employed) In this situation, I'd think 3 way CF would be preferable.

Nonetheless, looks good, I like solutions like this.

Yer I know...

But whats the "average" utilisation of the stream processors in modern games anyway.... or better, what can be expected? 75% maybe?
R(V)6xx is running 64 vec5 threads right? So it would have to run at like 80% to match nVidias shaders performance....

Blacklash · Nov 18, 2007, 08:49 AM

If it works on P35 motherboards it will might be a nice option for those folks.

Crash7 · Nov 18, 2007, 08:57 AM

Quote:

Originally Posted by Blacklash

If it works on P35 motherboards it will might be a nice option for those folks.

*raises hand* Yo!

JethroBodine · Nov 18, 2007, 09:36 AM

Quote:

Originally Posted by icecold1983

quad fire and tri sli are both gonna have terrible scaling and wont be worth the money.

What's "worth the money" is HIGHLY subjective.

If you have $40K a year to work with, quad fire and tri sli probably aren't worth it to you.

If you have a $150K a year, spending $900-$1500 on video cards may well be "worth it to you".

If you have less money, but value gaming highly and want to spend your disposable on computer parts instead of golf, it might be worth it to get double the speed for triple the price.

Only the buyer can decide what something is "worth" to them- there's no formula or rule.

JethroBodine · Nov 18, 2007, 09:44 AM

Quote:

Originally Posted by xenomorph

Yer I know...

But whats the "average" utilisation of the stream processors in modern games anyway.... or better, what can be expected? 75% maybe?
R(V)6xx is running 64 vec5 threads right? So it would have to run at like 80% to match nVidias shaders performance....

I don't think there's any "average" utilization data available.

My point was just that "You may have the physical 1280 shaders, but there are factors that will limit their use."

Having 1280 shaders sounds a lot better than it will actually be, in terms of performance. When you consider having 320 shaders brought the 2900XT to the level of the 98 shader 8800GTS for the most part, a massive shader advantage doesn't seem to be the key factor here- parallel instructions, shader speed, and texture fillrate seem to be the key components of these card's performance equation.

My .02.

TheNGTV · Nov 18, 2007, 09:57 AM

Quote:

Originally Posted by xenomorph

Yer I know...

But whats the "average" utilisation of the stream processors in modern games anyway.... or better, what can be expected? 75% maybe?
R(V)6xx is running 64 vec5 threads right? So it would have to run at like 80% to match nVidias shaders performance....

The more SPs the more wastage (in terms of shader power, percentage should remain the same if the whole ratio scales), but in terms of diesize vs performance, the R600 architecture still has a big advantage there.

Heck, R600 has 320 SPs + a fatty 512-bit bus, and it's still 10+% smaller than the G80! I'm not even including NVIO.

190mm^2 vs 320mm^2 is quite a big difference in chip size, even when G92 has 16 more SPs to unlock.
If nVidia manufactured G92 in 55nm, it would still have 271++ mm^2 as the die size as its best case scenario.

What I'd say is:
If R600 wasn't a fiasco financially, if AMD/ATI wasn't strapped for cash/market performance, 480SPs + better ratio on a hypothetical chip will become the new flagship in TOTAL performance.

It's 1.5X performance scaling, plus some more percentage if they have more TA/TF units and RBEs.

This hypothetical die would reside in the high 3XX/ low 4XX mm^2 area, and for a flagship, seems normal. You could clock it at ~700Mhz, it shouldn't too much- the current 3800s don't- and end up at 140-150W TDP.

But of course, they'd be swimming in MORE red if they went that way. The 8800GT would dominate sub $300, leaving this hypothetical chip little to compete in 400+ market, something that ATI can give up for now given its kinda shady stigma of the 2900XT.

Plus, it'd take more $$$ to engineer such thing.

2 RV670s on 1 board has the distinct advantages of a much smaller chip, flexibility in terms of yields, and still high margins for ATI.

Nov 15, 2007, 02:17 PM	#1	Advertisement (Guests Only) Login or Register to remove this ad
Sound_Card Banned Join Date: Apr 2006 Location: Constantinople Posts: 14,533	RV670 x2 on it's way http://www.legitreviews.com/article/593/1/

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Nov 15, 2007, 03:12 PM	#7
Burn Radeon R700 Join Date: Jun 2007 Location: in my house Posts: 878	no one noticed that there's only one bridge connector ? hummm.. __________________ -Burn see button on the left for system specs. There's a fine line between fishing and just standing on the shore like an idiot.

Nov 15, 2007, 02:19 PM	#2
Jas420221 Banned Join Date: Feb 2007 Posts: 6,221	Oh my!!!!! That thing should be a beast... Just what I was asking for! (not 3+ cards)

Nov 15, 2007, 02:24 PM	#3
jam2k . Join Date: Sep 2005 Posts: 2,702	Oh that looks sexy ... Me wants !!

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Nov 15, 2007, 03:35 PM	#8
AlexV Radeon Northern Islands Join Date: Apr 2006 Posts: 2,162	So this'll be my next purchase...or 4x3870s. Bahh, release it already, I need to buy some useless expensive stuff again, haven't done that in months...which makes me think about Phenom

Nov 15, 2007, 04:04 PM	#10
Rombat Radeon R300 Join Date: Nov 2000 Posts: 158	Wow is that going to be the actual size of the cards? I do hope they shrink it down more on the final product!

Nov 15, 2007, 08:28 PM	#11
DnL HD3850 AGP 512MB Join Date: Jan 2004 Location: there Posts: 3,581	You go try to shrink a 55mm dual gpu pcb with current fab process... good luck Hmm HD 3870x2 in Crossfire its nice IF AMD EVER FIXES CROSSFIRE properly =/ __________________ Got AMD? Last edited by DnL : Nov 16, 2007 at 12:39 AM.

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Nov 17, 2007, 11:22 PM	#13
Ristogod Semper Vigilare Join Date: Jan 2002 Location: MN Posts: 13,226	OK, I'm wondering how soon and how much? __________________ My Dealings Heatware eBay Amazon

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Nov 17, 2007, 11:27 PM	#14
ECH1 deal with it Join Date: Dec 2006 Posts: 1,622	rumor has it that this might see a December release date. Only time will tell if this is true or not.

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Nov 18, 2007, 01:36 AM	#15
demo space cadet Join Date: Sep 2007 Location: Melbourne Posts: 27,322	im gonna get rid of my 2 2900XT's and replace them with these bad boys 3870x2 CF ftw! __________________ ____________________

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Nov 18, 2007, 03:38 AM	#18
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Nov 18, 2007, 04:11 AM	#20
xenomorph Radeon R700 Join Date: Dec 2001 Location: LV-426 Posts: 760	lol so if you get two of those in Crossfire you'll be sitting on 1280 stream processors! __________________ Gigabyte P35C DS3R, E6750, Leadtek Winfast PX8800 GTS 512MB, 3GB Kingston DDR2 800, Seagate 250GB ST3250820AS, Samsung 160GB SV160N, Terratec DMX 6fire 24/96, Silverstone ST60F 600W

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Nov 18, 2007, 07:38 AM	#24
icecold1983 Radeon Arctic Islands Join Date: Nov 2006 Posts: 5,757	quad fire and tri sli are both gonna have terrible scaling and wont be worth the money. __________________ "you son of a ***** do u think you can elude us forever carlos" http://gawker.com/5002269/the-cruise...ed-to-suppress AHAHAHAH WTF IS HE TALKING ABOUT??????????

Nov 18, 2007, 08:49 AM	#26
Blacklash Che cazzo stai dicendo? Join Date: Sep 2003 Location: Old Vizima Posts: 1,992	If it works on P35 motherboards it will might be a nice option for those folks.

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