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 ATI Radeon HD 4890 RV790 Launches April 6, ETA: first-second week of APRIL.

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tech3910
post Apr 5 2009, 07:01 PM

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http://en.expreview.com/2009/04/02/radeon-...reviewed.html/4

QUOTE
The engineering sample features 12V 1.00A cooling fan, while the final version uses 12V 1.50A cooler.

i think dis is wat causing the confusion here.
certain review uses ES where some review uses retail.

QUOTE
Therefore, the cooler has been improved by adding one heatpipe. The centre heatpipe has diameter 8mm, and the other two has 6mm diameter. The rated current of HD 4890’s fans is 1.5A, compared with 1.0A found on HD 4870.

wen loaded, the 4890 fan speed shud pick up pace faster den 4870, which explain slightly higher noise level.

Added on April 5, 2009, 7:02 pm
QUOTE(X.E.D @ Apr 5 2009, 06:55 PM)
The fan itself is the same, so at 100% (full power) it's gonna sound the same.

Aka WHRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
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sounds like mini hair dryer............ biggrin.gif

This post has been edited by tech3910: Apr 5 2009, 07:02 PM
tech3910
post Apr 5 2009, 07:39 PM

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QUOTE(blindbox @ Apr 5 2009, 07:24 PM)
Yeah, I tried before XD (2900XT) .

Hmmm is it safe to run these cards at 80C~90C? I might change the fan speed profile later(yeah, buying it soon).
EDIT: Checked the site, looks safe.
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i suggest reference cooler, swap wit 3rd party cooler, den flash wit TOP or XXX bios............... thumbup.gif
can OC kao kao......... biggrin.gif

coz from stat, reference card has lower fail rate & OC bit better (if u dismiss the heat/noise issue).
tech3910
post Apr 5 2009, 08:52 PM

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QUOTE(blindbox @ Apr 5 2009, 08:11 PM)
Well, noise was never my problem as long as it is not annoying. Flashing with ASUS bios should allow the use of their software?
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i think can, coz ASUS TOP also is reference card, same like others, only tweak bios.

well, u could always use other s/w to tweak the voltage, like ATT.
tech3910
post Apr 10 2009, 02:36 AM

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QUOTE(sniper69 @ Apr 10 2009, 01:20 AM)
even nVIDIA scores 1000 pts more than ATi, i still prefer ATi icon_idea.gif... flex.gif

on real world gaming, me also prefer ATi than nVIDIA, it's not just IQ, it's all about smooth gaming at its best...
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ok, it not wrong to be ati fanboy, but the days of crying out loud better IQ has over.

dat only applies if u comparing wit nvidia 7 series which has a little bit of IQ degration.
but now, ATI & nvidia is both equal in terms of IQ.

This post has been edited by tech3910: Apr 10 2009, 02:37 AM
tech3910
post Apr 12 2009, 12:20 PM

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QUOTE(valent @ Apr 12 2009, 10:25 AM)
Doesn't work with Win7.

gosh sad.gif guess i need to have vista around..
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u can mod the bios straight.
tech3910
post Apr 13 2009, 02:02 PM

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QUOTE(X.E.D @ Apr 13 2009, 01:37 PM)
From what I've read in Beyond3D, Furmark is actually a "power virus" (for the ATI Radeons at least)

http://en.wikipedia.org/wiki/Power_virus
(Furmark is NOT mallicous though)

That means Furmark actually pushes your GPU to use more power than specified in the TDP, which never happens in other testing methods.
So stop using Furmark since it's a misrepresentation of how stable you GC is. I'm not sure, but the ATITool Artifact scanner is a good alternative.
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isn't dis good?
means dat itf it pass furmark, its gonna pass everything u throw @ it............... biggrin.gif
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