HD4870 + HD4890 Crossfire?

Sonido · Aug 25, 2009

Mussels said:
i did it. radeon 3200 IGP 256MB + 3450 PCI-E 512MB card. you cant get much more different than that.

One of the key techs in fusion.

a_ump · Aug 25, 2009

i kno of afr but isn't there like 2 other modes, one is tile renduring where each card rendurs certain squares or parts of the screen(hence tiles) n then isn't there another render mode where if the cards are equal performance, the image is rendered 50/50, so with an HD 4890+4870 couldn't it be like 45/55 or 40/60 so that possible AFR slowdown on the faster card wouldn't occur? just a few htoughts i had

here's what i was talking about explained in picture

lol crossfire render modes

ComradeSader · Aug 27, 2009

It's finally here

Got my order today, took half the day to set up >_> lol.

DFI LanParty X48-T2R UT mobo w/ 2-way crossfire @ x16/x16 (PCI-E 2.0), now currently fitted with a PC 4890 PCS+ 1GB and a PC 4870 PCS+ 1GB.

Unfortunately I've been a tad busy and haven't had to time game let alone bench, but everything is working fine as I can tell with CCC showing them both there in crossfire.

I figured I'd just post this in case there was anyone out there who wasn't sure on whether or not Hybrid Crossfire worked or not, well in this case it does so far. Will be gaming/benching tomorrow sometime.

PS: LOVE Corsair PSU's :rockout:

Scrizz · Aug 27, 2009

a_ump said:
i kno of afr but isn't there like 2 other modes, one is tile renduring where each card rendurs certain squares or parts of the screen(hence tiles) n then isn't there another render mode where if the cards are equal performance, the image is rendered 50/50, so with an HD 4890+4870 couldn't it be like 45/55 or 40/60 so that possible AFR slowdown on the faster card wouldn't occur? just a few htoughts i had

here's what i was talking about explained in picture lol crossfire render modes

don't forget, that was how the old crossfire worked pre-HD3k (ie look where it says ati.com)
:toast:

J-[o]-E... · Apr 2, 2011

4890 with a 512mb 4870

My current setup is as follows. Phenom ii triple core unlocked to quad oc'ed to 3.6. 2 patriot torq trb 64 gb ssd's in raid 0. 8 gb pc2 8500. X-Fi xtreme gamer fatality. killer xeno pro networking card. asus 4890 visiontec 4870 in crossfire using CCC 10.11. my 4890 is running 925 core stock mem. the 4870 is running 775 core stock mem. For all those saying that crossfire will disable half the ram on the 4890 this statement is false.both cards keep their respective core and memory clocks. this may be do to new ccc. but it does work, and well
W.E.I. is as follows
7.4 cpu
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7.6 graphics
7.6 graphics
7.6 hdd

JATownes · Apr 2, 2011

Thread necro revival....Bringing to life a 1.5 year old thread. :roll:

J-[o]-E... · Apr 2, 2011

just wanted to clarify that it does work and does NOT take half the mem away from the 1 gb card

ComradeSader · Apr 3, 2011

J-[o]-E... said:
and does NOT take half the mem away from the 1 gb card

I've never even heard of it doing that before.. :wtf:

But thanks for the info anyway, I guess.

Mussels · Apr 3, 2011

J-[o]-E... said:
just wanted to clarify that it does work and does NOT take half the mem away from the 1 gb card

yes it does. it just doesnt report it anywhere. the memory physically exists, it just doesnt get used.

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HD4870 + HD4890 Crossfire?

Sonido

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a_ump

ComradeSader

Scrizz

J-[o]-E...

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JATownes

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Mussels

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