Gigabyte HD 4890 Analogue or Digital PWM?

[Skakruk]

This questions is specifically for the Gigabyte GV-R489UD-1GD HD 4890.

Does it use analogue or digital PWM? I'm building an HTPC, and I want to avoid coil whine/squealing.

[zanzabar]

its an analogue and for an htpc dont get something with display port it will mess up the HDCP flags with dvi/hdmi in some cases.

i would recommend a reference card like the his thats always on sale and then a 3rd party sink like an hr03 if the stock sink is to loud for u. i have the stock reference HIS it has no whine and its relatively quiet at stock and uses about 30% fan speed at stock

[Skakruk]

its an analogue and for an htpc dont get something with display port it will mess up the HDCP flags with dvi/hdmi in some cases.

i would recommend a reference card like the his thats always on sale and then a 3rd party sink like an hr03 if the stock sink is to loud for u. i have the stock reference HIS it has no whine and its relatively quiet at stock and uses about 30% fan speed at stock

So the reference HIS cards use digital PWM?

Could you please explain the DisplayPort HDCP thing in a bit more detail?

[zanzabar]

if u have display port and hdmi/dvi output in some cases in windows it will break hdcp so u will just get a black screen with hdcp content over dvi/hdmi. and as a format there wont be any non integrated display port (laptops) monitors for a good 3+ years except for apple and tvs are even farther off than that


for the pwm, all refrence 4870/90 have digital and the HIS is the cheapest since its always on sale
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161276&cm_re=his_4890-_-14-161-276-_-Product

[Skakruk]

if u have display port and hdmi/dvi output in some cases in windows it will break hdcp so u will just get a black screen with hdcp content over dvi/hdmi. and as a format there wont be any non integrated display port (laptops) monitors for a good 3+ years except for apple and tvs are even farther off than that

OK, thanks for the warning. :up:

for the pwm, all refrence 4870/90 have digital and the HIS is the cheapest since its always on sale
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161276&cm_re=his_4890-_-14-161-276-_-Product

So yours is absolutely 100% squeal free? Even with the digital PWM, are there still any components in the card that might possibly squeal?

[zanzabar]

mine dosnt make any electrical noise and ive had it up to 1.425V and 1025mhz. ati puts more capacity on the pwm than is needed so the ati digital is not like the nvidia one

[largon]

Why would you be using a 4890 in a HTPC?
Unless you're actually building a gaming PC into a tiny case and using that as a media center.

[Skakruk]

Why would you be using a 4890 in a HTPC?
Unless you're actually building a gaming PC into a tiny case and using that as a media center.

It's to be an HTPC with performance gaming capabilities. And the GD01MX isn't what I'd call 'tiny'. Call it what you want, but It'll contain a digital TV tuner, HT surround soundcard and Blu Ray drive, and be situated in a living room - to me, that's an HTPC. :D

[Skakruk]

Say I put an HR-03 on the 4890 and an aftermarket fan, would I be able to connect the fan to the 4890's fan header? Would the 4890 be able to control that fan dynamically, the way it does it's stock fan?

[zanzabar]

no it wouldent work

[Brutuz]

It should work if you custom soldered it.

[phsinc1]

This questions is specifically for the Gigabyte GV-R489UD-1GD HD 4890.

Does it use analogue or digital PWM? I'm building an HTPC, and I want to avoid coil whine/squealing.

The GV-R489UD-1GD is using DIGITAL Voltera PWM, you can see it from the pictures @ NewEgg