HD 4770 Previews/Reviews

[Shintai]

That X shaped box is just retarded :|

But a 1GB card sounds good.

[Wadkiller]

Need some help here plz.

Do I wait for the 4770's to be released in SA & go crossfire. Or get 2 1GB 4850's or one 4890?

[ToTTenTranz]

nop!

Says who?

All same generation, similar-performance ATI cards have been crossfireable since R600.
HD2900XT was crossfireable with HD3850/70, HD4830 is crossfireable with HD4890. HD4770 is, most likely, crossfireable with HD4670 or HD4850.

[W1zzard]

Says who?

All same generation, similar-performance ATI cards have been crossfireable since R600.
HD2900XT was crossfireable with HD3850/70, HD4830 is crossfireable with HD4890. HD4770 is, most likely, crossfireable with HD4670 or HD4850.

"says who?" right back at ya. .. sounds like bs to me.. but i'll waste my time and give those combinations a try

edit: while the system is booting up with new cards i googled that:

[Nedjo]

Says who?

All same generation, similar-performance ATI cards have been crossfireable since R600.
HD2900XT was crossfireable with HD3850/70,

was it?

HD4830 is crossfireable with HD4890.

No it's not!

HD4770 is, most likely, crossfireable with HD4670 or HD4850.

It's not! Can't crossfire 640 SPs with 320 or 800 SPs

[W1zzard]

hd 4830 + hd 4770 = no cf + system hangs/bluescreen when starting ccc
hd 4890 + hd 4830 = bluescreen at startup.

nuked the amd review drivers and switched to 9.4

hd 4850 + hd 4890 = works
hd 4830 + hd 4890 = works but gives "mismatched but will still work" warning
hd 2900 xt + hd 3850 = no go

so in essence, cf only works with identical asics. rv790 is rv770 with a few non-architectural/non-instruction changes (rerouting of signal lines inside the gpu)

[Rasamaha]

There's a new one, on stock, just air, no mods at all, Vgpu 0,95v....1000Mhz will be possible with 1.0-1.05v on GPU.

[zerazax]

Nice clocks!

[Lightman]

There's a new one, on stock, just air, no mods at all, Vgpu 0,95v....1000Mhz will be possible with 1.0-1.05v on GPU.

This is awesome!

And I just upgraded my HTPC to HD4670

[demonkevy666]

There's a new one, on stock, just air, no mods at all, Vgpu 0,95v....1000Mhz will be possible with 1.0-1.05v on GPU.

big leap form 6.6gb without double the core speed.

[Hell Hound]

I would like to see 4x crossfire bench.

[Rasamaha]

I would like to see 4x crossfire bench.

only 2х possible ( 2 cards)

[demonkevy666]

only 2х possible ( 2 cards)

ATI is going bonkers I think now they'll support tri and possibly quad 4890's, but not tri or quad 4770.

[gamervivek]

big leap form 6.6gb without double the core speed.

stock 4770 pixel fillrate is 12Gpix/s,earlier versions of gpuz showed only 8 ROPs for the 4770 and hence half the real fillrate.

ATI is going bonkers I think now they'll support tri and possibly quad 4890's, but not tri or quad 4770.

where did you get that from?

[Nedjo]

ATI is going bonkers I think now they'll support tri and possibly quad 4890's, but not tri or quad 4770.

???

all 4770s are QuadFire capable!

That gives me idea... for a price of this single item:
CPU:
http://www.newegg.com/Product/Produc...82E16819115200

You can buy all these items:
CPU:
http://www.newegg.com/Product/Produc...82E16819103674
MOBO:
http://www.newegg.com/Product/Produc...82E16813130223
VGA
4x http://www.newegg.com/Product/Produc...82E16814127432
MEMORY:
http://www.newegg.com/Product/Produc...82E16820227297
HDD:
http://www.newegg.com/Product/Produc...82E16822136073

[Manicdan]

i havnt kept up with the whole thing, but has power consumption and heat been improved. i think its a shame that its between a 4830 and 4850 in performance and heat, but with the die shrink should be a killer in the perf per watt. i would have upgrated my card with this if the power consumption was where a 40nm with gddr5 should be.

[Shadowmage]

Is there a consensus yet on overclocked 4770 vs. overclocked 4850?

[ownage]

hd 4850 + hd 4890 = works
hd 4830 + hd 4890 = works but gives "mismatched but will still work" warning
hd 2900 xt + hd 3850 = no go

so in essence, cf only works with identical asics. rv790 is rv770 with a few non-architectural/non-instruction changes (rerouting of signal lines inside the gpu)

HD2900 and HD3850 can be crossfired, I've done that when HD3850 was just released. I believe it was Guru3D that tested RV670+R600 crossfired successfully back then. I agree with you only identical asics can be crossfired, but only because the driver allowing which cards can be crossfired. The reason is probably really simple, to be sure customers don't have problems with combining totally different cards. With older (modified) or beta drivers there's a change hd4770 and HD4830 can be crossfired. To much hassle off course and not doable on the long run.

[demonkevy666]

stock 4770 pixel fillrate is 12Gpix/s,earlier versions of gpuz showed only 8 ROPs for the 4770 and hence half the real fillrate.



where did you get that from?

it's right there in w1zzards review ? on TPU...

The HD 4770 supports CrossFire configurations with two cards. I did confirm with AMD that there is no support for CrossFire triple or quad. It wouldn't make sense on such a product anyway.

Page three on the review.

[W1zzard]

i specifically asked amd "does it support triple or quad configurations?" their answer was "By design, the 4770 is limited to two cards in CrossFireX"

[gamervivek]

it's right there in w1zzards review ? on TPU...



Page three on the review.

hadn't seen that review,found it on amd's product page-
http://ati.amd.com/products/radeonhd4700/index.html

4770-

ATI CrossFireX™ Technology - ATI CrossFireX™ technology with dual GPU support offers superior scalability so your system is ready to level up when you are2.

4890-

ATI CrossFireX™ Technology - ATI CrossFireX™ technology with up to quad GPU support offers superior scalability so your system is ready to level up when you are

too bad,three of these might have been a very very good performance solution for the money.

[W1zzard]

With older (modified) or beta drivers there's a change hd4770 and HD4830 can be crossfired. To much hassle off course and not doable on the long run.

yes and as soon as ati enables the sideport r700 will beat gtx 295.

if you really want a best bang for the buck crossfire rig, work with the hd 4830, they are dirt cheap right now

[ownage]

That X shaped box is just retarded :|

Far from retarded.
If you are in a local hardware store, and you see 10 boxes from 10 different brands, the X shaped box is definitely an eye catcher.

[Sly Fox]

Far from retarded.
If you are in a local hardware store, and you see 10 boxes from 10 different brands, the X shaped box dis definitely an eye catcher.

Agreed. It's gaudy and unpleasant for sure, but not stupid.

[Shintai]

Far from retarded.
If you are in a local hardware store, and you see 10 boxes from 10 different brands, the X shaped box is definitely an eye catcher.

Im not saying its retarded in terms of eye cacthing. But all the practical issues etc. Same space one takes you use 2 "old" etc. Plus even for carry its a wierd shape.