asus gtx670 dcii 4gb flexing

[ng510]

Hello everyone

I have an Asus gtx670 dcii 4gb and it works great both for games and my work.
I use an asus sabertooth x79 motherboard and i noticed some things i would like to ask

1.The gfx card is big and if i plug it to pcie1 it block the motherboards chipset fan and with the heat of the card resulting in big temperatures of the usb3.1 of the motherboard. In the manual it is reccomended for single card to use pcie1.
What if i use pcie2 slot? what are the disadvantages?
2.The card is heavy and it is noticebily flexing, by its own weight. the card is supported in the slot and the two screws of the pc case. is that flexingof the card in the long run going to cause any troubles?now is working great.
3.And finally i use a PB278Q monitor and i am not very impressed with gradients. It shows noticeable slight uniform gradient banding.Is that because of the gfx card or the monitor? I would expect a monitor at such a price wouldnt have banding (my cheap laptop screen doesnt)

If anyone could advise me would be great 🙂
Thank you

[Arne_Saknussemm]

Hi there!:)

The card certainly is over the chipset fan but it does not cover it, there is room for air to get to the fan and the PCH needs minimal cooling. I don't quite understand the USB 3.0 temperature.

The recommended slot is slot 1 for single card...maybe if you use the fourth PCIe slot and switch off the first you can run the card at x16 but maybe it will run x8 you will have to experiment.

If the card is in the slot well and secured with screws to the case any minor flex is OK.

The monitor I'm not sure about....maybe try another cable etc.

[ng510]

Arne Saknussemm wrote:
Hi there!:)

The card certainly is over the chipset fan but it does not cover it, there is room for air to get to the fan and the PCH needs minimal cooling. I don't quite understand the USB 3.0 temperature.

The recommended slot is slot 1 for single card...maybe if you use the fourth PCIe slot and switch off the first you can run the card at x16 but maybe it will run x8 you will have to experiment.

If the card is in the slot well and secured with screws to the case any minor flex is OK.

The monitor I'm not sure about....maybe try another cable etc.

I see. Thank you for your answer. I use the asus thermal radar software. There is graphic UI that shows the positions of the temp sensors. The usb3.1 i am refering to is shown close to the pch fan und i suspect tha my gfx card is heating it. I added another 120 fan and the temperature has fallen significaly but still remains the highest reading of temp together with VCCSA.

[X-ROG]

The GTX 670 DCII shouldn't bend that much due to the rear metal cover bracing the PCB. How is the 670DCII plugged in - are the cables coming from the bottom 'adding weight'?

What Sabertooth motherboard are you using? (since you say Thermal Radar) Can you post a screenshot of your temps?

The 278Q shouldn't band as it's an 8bit MVA panel. What are you seeing banding in exactly? Have you plugged it in using the dual-link DVI cable?

[ng510]

MarshallR@ASUS wrote:
The GTX 670 DCII shouldn't bend that much due to the rear metal cover bracing the PCB. How is the 670DCII plugged in - are the cables coming from the bottom 'adding weight'?

What Sabertooth motherboard are you using? (since you say Thermal Radar) Can you post a screenshot of your temps?

The 278Q shouldn't band as it's an 8bit MVA panel. What are you seeing banding in exactly? Have you plugged it in using the dual-link DVI cable?

I am using sabertooth x79 in a corsair 650D case. At first i had the stock fans setup. So the temps in red are from the stock setup. Then i added a 120 fan to the 5.25 bay with a custom fan behavior and a second intake 200 fan, in full speed, stucked to the stock one so the temps dropped a lot. But as you can see the usb3.01 is high in all setups.I believe the gfx card is pushing warm air down so that explains the rise, or i dont know. Its weird because i ve read online that putting two fans together in series doesnt work, but the drop in temps impressed me.

I tried to capture the cards sag. I dont know if it is much but when i push the card up to level it, it feels like the pcie slot of the motherboard is relieved of much strees coming from the weight of the card.

About the monitor. The behavior of the monitor seems the same when i use either hdmi 1.4 or dual dvi. The banding is seen in gradients mostly the grayscale ones. In other color gradients its not so much. But still i would not expect banding is an expensive (at least for my wallet) monitor like Pb278q. As seen in some reviews the banding is there for other users and reviewers too. I dont know if mine is more. The thing is that the screen has no dead pixels, no backbleeding so i am happy with it. I am just not sure about the banding.I just dont know how to reproduce the effect since i believe banding evaluation can be done only with the screen in fornt of someone and not through a pic.but i shot one maybe you can see it.

thanks
alex

[X-ROG]

USB 3.0-1 is where exactly? Your temps are not skyrocketing into the 70s so it'll be fine if you're not experiencing instability. Your graphics card twist appears mostly normal too, even if it is undesirable. If you're really worried maybe try to prop it up gently with a thick drinking straw under the near corner 😉

I'm not sure about the banding honestly. I use a PB278Q in work and have never seen it in the Photoshop work I do. If you are looking at images that have LESS color data saved versus what the monitor can produce, there will be banding. Can you link me to the reviews? 🙂

[ng510]

MarshallR@ASUS wrote:
USB 3.0-1 is where exactly? Your temps are not skyrocketing into the 70s so it'll be fine if you're not experiencing instability. Your graphics card twist appears mostly normal too, even if it is undesirable. If you're really worried maybe try to prop it up gently with a thick drinking straw under the near corner 😉

I'm not sure about the banding honestly. I use a PB278Q in work and have never seen it in the Photoshop work I do. If you are looking at images that have LESS color data saved versus what the monitor can produce, there will be banding. Can you link me to the reviews? 🙂

Usb3./01 is near the PCH fan and the gfx card. Yes pc is stable but now room temp is 20. From may to august we experience 40 degrees. So the extra 20 might be a problem in some areas.I guess with the fans at max it will e ok. About the card the only reason i asked is because of the mobos pcie slot stress. If you thik its ok then im fine and not concerned about the aesthetics of sagging. A straw! hehe. might try that if things get worse.

Here are two reliable reviewers of screens that mention the banding in gradients
http://www.tftcentral.co.uk/reviews/asus_pb278q.htm
http://www.cnet.com.au/asus-pb278q-339342332.htm
also in many forums users have complaints about this issue. I dont know if it is some screens with this issue or it is panels limitation. I am expreriencing it both in photoshop gradients (enough data there) and in images like windows 7 default desktop pic, login screen and random internet photos (mostly computer generated images not photographs).
I am not expecting a 10bit perfomance from pb278q but its odd that my cheap laptop perfomrs better in gradients