ATI's HD 4800 series can mix with HD 3870

DaMulta · Jun 19, 2008

Fud

The mentioned trio in CrossFireX scores 14,180 marks in 3DMark06. Before sticking in the HD 3870 card, the system scored 12,300 marks under Windows Vista 64-bit.

wolf2009 · Jun 19, 2008

WOWOWOWOWOWOWOWOWOWOWOWOWOOWWOOWOWOWOWEEEEEEEEEEEEEEEEEEEEEEEE, thats awesome news . Now AMD definitely has a nedge over nvidia in technology dept , DX10.1, asymmetric crossfire.

panchoman · Jun 19, 2008

even if its fud, i think its true, as amd did promise a next gen hybrid crossfire

DaMulta · Jun 19, 2008

You could do the same thing with a 2900 and a 3870. It was never supported tho.

candle_86 · Jun 19, 2008

hmm if thats so i might just get a 4850 to go with my 3870 later if the price is right

Cold Storm · Jun 19, 2008

I don't see why they wouldn't have that happen with the cards... They have that ability. I don't think Fud is wrong here!

dng29 · Jun 19, 2008

i can't wait to get the 4850 and crossfire it with my 3870x2. two very similar card in specs. both ddr3. both can process 1 teraflop. i hope the 8.6 cat will support it well. i wonder if i can mix my asus 3870x2 with a sapphire 4850. only 9 left on this fxvideo online store. i'm so tempted to pull the trigger. i bet price will go down more once more vendors have the card. i was going to sell my asus 3870x2, but now i will pull it from the for sale forum. this is great news and this is how amd should treat their loyal fans. you don't see nvidia providing sli support for say a 9800gtx with a gtx260 or gtx280. go amd.....

panchoman · Jun 19, 2008

DaMulta said:
You could do the same thing with a 2900 and a 3870. It was never supported tho.

would that mean that maybe you'd be able to xfire a 4870 with a 2900? this xfire will prove very beneficial and people can just upgrade like this instead of having to buy a completely new card,etc.

kenkickr · Jun 19, 2008

This will be awesome if it works. Screw getting my friends 3870X2 for $200, I think I'll just pick one of these up!! Thanks for the info.

btarunr · Jun 19, 2008

candle_86 said:
hmm if thats so i might just get a 4850 to go with my 3870 later if the price is right

What!! You actually own a Radeon?? The world is divided by zero :laugh:

jk

I didn't know you could bridge a HD2900 with a RV670.

Megasty · Jun 19, 2008

This CFx is turning out to be a godsend. 1+ on the fact the the slowest card don't kill the fastest card :rockout:

candle_86 · Jun 19, 2008

btarunr said:
What!! You actually own a Radeon?? The world is divided by zero

jk

I didn't know you could bridge a HD2900 with a RV670.

don't remind me, its our little secret on TPU it does not leave this site, to the rest of planet earth im an Nvidia zealot bent on ATI's total distruction k?

dng29 · Jun 19, 2008

really? the slower one will not affect the faster one? this makes the wait just a little more unbearable. i will definitely pull the trigger next week or over the weekend of more 4850s are available online and cheap. i just read the tweaktown review of the 4850 single and cf and the performance is pretty much on par with the gtx 280. the price wins hand down over the gtx 280. i read somewhere that the cheapest gtx 280 is at $599 now. still too expensive compared to a pair of 4850s for $400.

Ravenas · Jun 19, 2008

A 3870 X2 + a 4850 :toast:

dng29 · Jun 19, 2008

or i might do a 3870x2 + a 4870. my only concern is the ddr5 on the 4870. my 3870x2 might not be able to keep up. correct my math if i'm wrong here, but lets see a 3870x2 can process 1.05 teraflop and the 4870 can process 1.2 teraflop. if combined would that be 2.25 teraflop affectively? woot.

PVTCaboose1337 · Jun 19, 2008

That is a very cool feature. ATI beat NVIDIA to this punch!

wolf2009 · Jun 19, 2008

Megasty said:
This CFx is turning out to be a godsend. 1+ on the fact the the slowest card don't kill the fastest card

r u sure , where did u read that ?

i have always thought and read otherwise .

dng29 · Jun 19, 2008

yea i always thought that cross generation crossfire will hinder the better card. the slower card will make the faster card run slower. i hope amd figure out how to optimize crossfire whereby the slower card will be a supporting card to a faster one. what would be better is if the faster card makes the slower one run faster. sort of like automatically overclocking the slower card. i can only dream.

Megasty · Jun 19, 2008

wolf2009 said:
r u sure , where did u read that ?

i have always thought and read otherwise .

All of the different 3xxx series cards can be CFx. I even went as far to try my 1gb 2900 beast with the 3870, 50, & X2 & they all worked & the results were always faster than the respective 38xx card. They really hit the nail on the head with this setup. Too bad it still scales like garbage in games.

dng29 said:
yea i always thought that cross generation crossfire will hinder the better card. the slower card will make the faster card run slower. i hope amd figure out how to optimize crossfire whereby the slower card will be a supporting card to a faster one. what would be better is if the faster card makes the slower one run faster. sort of like automatically overclocking the slower card. i can only dream.

That's SLI - using stock & OC'd cards. CFx only use the resources from each card as a total graphical equation. You might need up with a 15% better performance over the 1st card or you might need up with 70%. It all depends on what that 2nd card is but the baseline for performance is always the card in the first slot. I found that out when I put a 3870 in the 1st slot & a X2 in the 2nd :shadedshu

johnnyfiive · Jun 19, 2008

Time to start saving for a 4850... gonna be nice seeing big brother team up with little brothers. Ninja Turtle style.

dng29 · Jun 19, 2008

since the nda has been lifted, more and more reviews are coming out. it's going to be a busy weekend reading up on reviews. i wonder if the egg and other favorite online shops will have the card for order tomorrow or this weekend. i got some money in paypal to burn

. still waiting on review from Wizzard

. anyone order a 4850 yet?

trt740 · Jun 19, 2008

I'm gonna buy a 4850 and match it with my 3870x2

cdawall · Jun 19, 2008

no no no i was supposed to be able to get used 3870s cheap and now people will want to keep them

damn you ati for helping out the customer!!!!!

dng29 · Jun 19, 2008

the 4850 should accommodate your asus 3870x2 nicely

. i have an asus 3870x2 as well, but it's the first version. it runs hot because it doesn't have the dual fans. how's your 3870x2? i wish the egg post the 4850 already. hopefully it'll be cheap on the egg. it's going to be an exciting last week of june. i hope to have the 4850 before 4th of july so i can game.

trt740 · Jun 19, 2008

dng29 said:
the 4850 should accommodate your asus 3870x2 nicely . i have an asus 3870x2 as well, but it's the first version. it runs hot because it doesn't have the dual fans. how's your 3870x2? i wish the egg post the 4850 already. hopefully it'll be cheap on the egg. it's going to be an exciting last week of june. i hope to have the 4850 before 4th of july so i can game.

My 3870x2 must have sat on the self forever because the driver disk was junk once I got the disk install it was and is unreal it will do 920/1098 no problem and even at 45 percent fan(which is quiet as hell) it won't break 50c on the cores. I also got mine for 284.00 after a rebate with two games ranbow six las vegas 2 and company of heros. I have company of heros so after i sell it and ranbow six the card should cost me 230.00 or so.

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ATI's HD 4800 series can mix with HD 3870

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