HD 6990 Preview/Review

[Gaul]

here , local review :

http://www.xtremesystems.org/forums/...d.php?t=268199

[armartins]

I thought my 4870x2 was loud, but this is 16 decibels louder according to anandtech in its (880mhz form) and even at 830mhz, it is 9 decibels louder than the 4870x2.

You are far from right my friend. To a human perceive a sound as "doubled" it needs between 10 to 15 dbs more. 3db is the point at you apply the double of the potency in a driver (not the case here) and this is not considering the diminishing return of being already loud (eg 480 vs 6990 sound). And not considering either the specific sound of the air passing through the dissipator that may (or may not) have an annoying sound.

[RacingTurtle]

Sending this in when it breaks would be warranty fraud...

I'll do the same thing if mine goes. They shouldnt have put something on the card that allows the user overclock if they dont want to back up their own work.
If I modified the BIOS with RBE or whatever and borked it on my own, then sure, thats fraud.

[tajoh111]

You are far from right my friend. To a human perceive a sound as "doubled" it needs between 10 to 15 dbs more. 3db is the point at you apply the double of the potency in a driver (not the case here) and this is not considering the diminishing return of being already loud (eg 480 vs 6990 sound). And not considering either the specific sound of the air passing through the dissipator that may (or may not) have an annoying sound.

I thought sound was logarithmic. It might work differently, but 10db should definitely be noticeable.

[wez]

Technically not, he didnt break the sticker.

Also you could reach under the sticker with a needle or something and push the switch over.

The sticker was a dumb idea.

It's not a warranty void sticker anyway, just a warning from what I've seen. But OC will void warranty, and thats what the switch effectively does. It just comes down to the moral values of the user.

[MaddMuppet]

I'll do the same thing if mine goes. They shouldnt have put something on the card that allows the user overclock if they dont want to back up their own work.
If I modified the BIOS with RBE or whatever and borked it on my own, then sure, thats fraud.

Agreed. If they don't want to honor the warranty if you overclock, then why add the switch. That's just plain dumb.

[Gaul]

[Monstru]

Asus HD 6990 Overclocking Study | lab501

[kuroikenshi]

bloody hell mostru, you and the guys at Lab 501 always know how to deliver decent clocks (these are def cat for sure)

[saaya]

wau... awesome cooling!
dual gpu cards should come with stock cooling like this! seriously!

[saaya]

oh man! over 100W when watching a movie?
http://www.xbitlabs.com/articles/vid...0_4.html#sect0

hope they will fix that with a driver update...

[Manicdan]

oh man! over 100W when watching a movie?
http://www.xbitlabs.com/articles/vid...0_4.html#sect0

hope they will fix that with a driver update...

that was peak



it spikes up to 6.1amps, but if you average it all out then its probably just 20w over idle if that.

[Levesque]

Yup buy XFX 6990's they cover the switch :P But seriously great going XFX hope they can back it up with good support as well and this fixes a major issue with this card (atleast for me).

XFX, Sapphire and now Powercolor officially all support the 6990 ''OC switch'' fully. They all updated their warranty pages.

Asus will follow. No other choices for them, or they won't sell any cards.

Non-issue very soon.

BTW, I was able to move the infamous switch with a harpin without removing the sticker. Sneaky fraud!

So I now officially claim the copyright on the DIY ''6990-hairpin-yellow-sticker-warranty-trick''.

Even if it will be a non-issue soon.

[Monstru]

bloody hell mostru, you and the guys at Lab 501 always know how to deliver decent clocks (these are def cat for sure)

Thank you, we definately try

[Lanek]

@ Monstru .... I will be really affraid to break the PCB with this 2 monsters CPU cooling.. nice mod..... and well im really suprised of the resulting temp.. good job

::::::::::::::::::::::::::::::::::::::::::::::

Start to look good, push the 2600K to 5ghz and you will break 40K GPU scores,

[AMDnord]

Thank you, we definately try

really Insane way to cool it monstru. i like it

nice results too

[Lu(ky]

Thats more like it Gaul for some reason I have some bad Registery files somewhere from my 5970 and my max OC was 980/1500 pictures below with my new 6990 as you can see my score blew and I figured something was wrong you just proved that to me... Thanks waiting for my new SSD and new MIVE board, and new 6970 card for a 6990 + 6970 fun...

[Gaul]

Thats more like it Gaul for some reason I have some bad Registery files somewhere from my 5970 and my max OC was 980/1500 pictures below with my new 6990 as you can see my score blew and I figured something was wrong you just proved that to me... Thanks waiting for my new SSD and new MIVE board, and new 6970 card for a 6990 + 6970 fun...

ic, try oc u'r sandy to 4.8 gh
here :

[saaya]

that was peak



it spikes up to 6.1amps, but if you average it all out then its probably just 20w over idle if that.

3.3v shy of 2A so lets say 5W
12v pciE shy of 1A so lets say 10W
12v 1 between 1A and .5A so lets say 5W
12v 2 at least 2.5A, up to 6A, so lets say 30W to 70W

thats at least 50W and up to 120W

so yeah, i wonder how they got to 110W... sounds like it only spiked to 110W... but even 50-60W for video playback is a lot... blue ray players do this for 10W... and tegra and other chips do this for less than a watt... dont get why gpus arent better at this...

but yeah your right, compared to other vgas out there the 6990 actually does OK when playing back video... i wonder why they rated it 110W when it seems to be more around 60W according to their own meassurements...

[BababooeyHTJ]

Asus HD 6990 Overclocking Study | lab501

Thats just insane. What sinks are those that are on the vrms? I could use some of those.

[biohead]

Thats just insane. What sinks are those that are on the vrms? I could use some of those.

they came with my prolimatech mk-13

[Levesque]

6990 with Swifttech waterblock. Directly from Gabe. On OC Bios. Only 1.175v. That card will easily go over 1000 with a waterblock. Who said the 6990 is ''hot''?

[armartins]

Thats more like it Gaul for some reason I have some bad Registery files somewhere from my 5970 and my max OC was 980/1500 pictures below with my new 6990 as you can see my score blew
[/IMG]

Looks like GDDR5 error check killing your score... lower memory clocks and run again.

[Lanek]

MSI afterburner voltage control is now compatible with HD6990

http://www.guru3d.com/news/-msi-afterburner-220-beta-1/

MSI Afterburner 2.2.0 Beta 1 is ready, changes list includes:

Added core voltage control for reference desing AMD RADEON 6990 graphics cards with VT1556 voltage regulators

[Gaul]

TRI-Fire

6990 @ 950/1350 + 6950 @ 950/1350


VANTAGE