AMD To Launch Radeon HD4890 "RV790" In April

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03-25-2009, 04:53 PM
Manicdan

im suprised xfx isnt releasing a 900mhz version
03-25-2009, 04:54 PM
LordEC911

Quote:

Originally Posted by Manicdan

im suprised xfx isnt releasing a 900mhz version

It sounds like AIBs have to hold off releasing the OCed versions until later in the month.
03-25-2009, 05:18 PM
Hornet331

any clock for clock details?

Cause if its the same i see no reason to upgrade, mines does 840/1100 on stock voltage so im fine with it. ;)
03-25-2009, 05:24 PM
LordEC911

Quote:

Originally Posted by Hornet331

any clock for clock details?

Cause if its the same i see no reason to upgrade, mines does 840/1100 on stock voltage so im fine with it. ;)

Still just the supposed 6% increase, which was assumed due to the previous rumor of a 20% increase in performance over RV770.
A few Vantage benches also seemed to point to a IPC increase with scores of a RV770 @ 820mhz compared to the RV790 @ 850mhz.
03-25-2009, 05:49 PM
initialised

Quote:

Originally Posted by ILikeCosmosS

i am guessing this requires 8pin + 6pin because at the back it shows 8 + 6 solder points at the top

i will wait for real reviews to come out this should be better then gtx285!

I think 4890 1GB stock ~ GTX 275 (GTX295/2) and OC 4890 2GB > GTX 285 = OC GTX 285

Reference cards like our PowerColour's have solder points for 8+6 pin but physically only 2x6 pin. OC cards have 8+6 pin.

Quote:

Originally Posted by Hornet331

any clock for clock details?

Cause if its the same i see no reason to upgrade, mines does 840/1100 on stock voltage so im fine with it. ;)

Will try and get Clock for Clock and Max OC vs Max OC
03-25-2009, 06:00 PM
Hornet331

Quote:

Originally Posted by LordEC911

Still just the supposed 6% increase, which was assumed due to the previous rumor of a 20% increase in performance over RV770.
A few Vantage benches also seemed to point to a IPC increase with scores of a RV770 @ 820mhz compared to the RV790 @ 850mhz.

Well vantage is quite the most irrelevant thing ever. :p:

The preeleminary benches from pconline dont show this gains.
All lower then 13% beside vantage, and ~13% is the increase in clockspeed on core and ~8% on mem which also adds a couble of % to the all over performance gain.

I dont think the 4890 is worth the upgrade for anyone who owns a HD4870 or 260GTX, espeicla with the option of a soft/bios voltmod for those cards.

Better wait for the 5 seriers.

Quote:

Originally Posted by initialised

Will try and get Clock for Clock and Max OC vs Max OC

thx :up:
03-25-2009, 06:04 PM
NapalmV5

any 2gb 4890 available today anywhere ?
03-25-2009, 06:12 PM
Hornet331

Why you want 2gb?

I understand the need for 1 gb (i got one myself), but 2gb is overkill. No game has that much textures, not even fanmods for oblivion.

Plus the more memory the worse to oc.
03-25-2009, 06:13 PM
ColonelCain

Quote:

Originally Posted by LordEC911

Yep, that was me. Heard that back before the pictures started showing up...

Can see the third heatpipe in this pic and this compared to the 2 heatpipe design of RV770, seen here, here and here.

Edit- Also had heard that they should be using a newer model fan on reference retail cards that perform slightly better as well, airflow and noise, but I haven't seen any proof of that yet other than slightly different numbers on the fans but I can't find good enough pictures for either one.

I suspected in that dailytech pic when I first saw it that that was another heatpipe, but wasn't sure.

What I want to know though, is will the "lowest" version of the 4890 (non-overclocked, cheapest ones), still have the same clock potential as the pre-overclocked ones? I know that this is usually never the case, but after reading a lot of tech sites news articles, this is what I am beginning to fear. :( (Though, I could be completely wrong.)
03-25-2009, 06:34 PM
Iconyu

Quote:

Originally Posted by Hornet331

Why you want 2gb?

I understand the need for 1 gb (i got one myself), but 2gb is overkill. No game has that much textures, not even fanmods for oblivion.

Plus the more memory the worse to oc.

Can't max out GTA4 with 1GB, and other games might come along that need the ram too.
03-25-2009, 07:27 PM
Shalamay

Can this be crossfired with my 4870x2 or should I just get a 4870 1gb?
03-25-2009, 07:29 PM
Glow9

Quote:

Originally Posted by Hornet331

Well vantage is quite the most irrelevant thing ever. :p:

The preeleminary benches from pconline dont show this gains.
All lower then 13% beside vantage, and ~13% is the increase in clockspeed on core and ~8% on mem which also adds a couble of % to the all over performance gain.

I dont think the 4890 is worth the upgrade for anyone who owns a HD4870 or 260GTX, espeicla with the option of a soft/bios voltmod for those cards.

Better wait for the 5 seriers.

thx :up:

Agreed, no market demand for much more than whats out there especially economically right now. Seems more like this is a counter to 280 to 285. On the upside though its creating some awesome deals for the 4870 1GB which is pretty much on par with this things performance.
03-25-2009, 07:34 PM
zerazax

One more week (or a few days) and all is done
03-25-2009, 08:19 PM
LiquidReactor

Quote:

Originally Posted by Iconyu

Can't max out GTA4 with 1GB, and other games might come along that need the ram too.

You can now actually max out GTA IV. Its not as memory dependent as people may think, vanilla GTA IV release from Rockstar was just extremely rushed POS for the Christmas season. Patch 1.0.3.0 improved performance alot, also if using the -norestrict command in lauch shortcut you can max out all the draw distance/detail distances regardless or ram size and still play it confortably. I can max stuff out with my 8800 Ultra to high texture quality and view distance/detail distance set to 100 and still play with with smooth fps (25 minimum) at 1680x1050.

Anyways, sorry for sidetracking the thread just wanted to inform people.
03-25-2009, 08:25 PM
NapalmV5

Quote:

Originally Posted by Hornet331

Why you want 2gb?

I understand the need for 1 gb (i got one myself), but 2gb is overkill. No game has that much textures, not even fanmods for oblivion.

Plus the more memory the worse to oc.

maybe cause i dont play @ 640x480 :shakes:

you must be one of the large crowd that said 1gb is overkill/worthless when 1gb 4870 was released.. and all of you were proven wrong

despite 1gbs lower clock still offers more performance even @ 1024x768 vs 512mb :rolleyes:

i play @ heavly loaded 1920x1080 so i certainly need 2gb

you guys dont need/want 2gb.. fine no problem.. but better not stay in my way

the day they release 4gb/8gb video cards is the day i move to 64bit win7/whatever os by then :up:
03-25-2009, 08:34 PM
Macadamia

OCUK has Vantage results at 22% increase with 13% clock boost.

40% after 4890 is overclocked.

A fellow Malaysian forumer is offering the 850Mhz at 300 and 900Mhz at 320USD. Malaysian prices are high so it's natural. For the 40% I think it's reasonable enough.
03-25-2009, 08:59 PM
eric66

ok whats the deal everybody has the card but i don't see any tests even oc results whats up are you under nda or smthng ?
03-25-2009, 09:21 PM
Calmatory

Quote:

Originally Posted by NapalmV5

maybe cause i dont play @ 640x480 :shakes:

you must be one of the large crowd that said 1gb is overkill/worthless when 1gb 4870 was released.. and all of you were proven wrong

despite 1gbs lower clock still offers more performance even @ 1024x768 vs 512mb :rolleyes:

i play @ heavly loaded 1920x1080 so i certainly need 2gb

you guys dont need/want 2gb.. fine no problem.. but better not stay in my way

the day they release 4gb/8gb video cards is the day i move to 64bit win7/whatever os by then :up:

Man, YOU are XTREME. Walkin' your own paths, spitting at the crowd.. respect..:)

:ROTF:
03-25-2009, 11:23 PM
Macadamia

You WILL need a >1GB nVidia card.

A >1GB ATI card is really, really pointless. (I take my words back on the 2GB Vapor-X.) :shrug:

In 1920*1200 8x AA, Far Cry 2, GTX260 uses about 450MB more vRAM than 4870.
03-25-2009, 11:27 PM
Bo_Fox

Quote:

Originally Posted by Macadamia

You WILL need a >1GB nVidia card.

A >1GB ATI card is really, really pointless. (I take my words back on the 2GB Vapor-X.) :shrug:

In 1920*1200 8x AA, Far Cry 2, GTX260 uses about 450MB more vRAM than 4870.

I thought this underlined "450MB more vRAM" was linking to the source, so I tried clicking on it to no avail. Source please? :D
03-25-2009, 11:32 PM
Macadamia

I'm currently at work where broadband is generally fast, except to chinese sites... :shrug:

I'll link it when I get home. But it's definitely 400+ MB difference, with GTX 260 at 9XX MB and 4870 not exceeding 512 yet. I saw the graphs last night and my jaw dropped.

From what a friend told me, nVidia doesn't blend the AA samples directly, rather storing them in a buffer. This can be extremely costly in several cases, and FC2 is one of them. In fact, might MSAA buffer readback (the DX10.1 feature that nV supports) be the cause of it?
03-26-2009, 02:01 AM
Da_maniaC

Am anxious to see some results from 'Initiliased'. :)
That review doesn't look all to interesting yet imo.
You guys really thinks CCC 9.4 is going to increase performance a lot?
03-26-2009, 02:28 AM
Macadamia

2 Attachment(s)

http://diy.pconline.com.cn/graphics/...3/1586849.html

FAR CRY 2 VRAM Usage.

Yellow is min, green is max. In all cases vRAM usage was almost near-max after loading.
03-26-2009, 02:49 AM
MaDuLo

other games beside farcry showing that behaviour?
03-26-2009, 02:57 AM
Macadamia

2 Attachment(s)

Mirror's Edge

Yes.

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