AMD HD 7750 going in your HTPC? - AVS Forum
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Home Theater Computers > AMD HD 7750 going in your HTPC?
lespurgeon's Avatar lespurgeon 02:54 PM 02-15-2012
So they are out. The gamers don't like the price/performance, but at 50 watt if they get the drivers all worked out I'm thinking a great card for my next build - since it will let me game on the 1080 projector at reasonable settings. What do you think?

http://www.anandtech.com/show/5541/a...ition-review/6

gorthocar's Avatar gorthocar 05:20 PM 02-15-2012
Not if it has a fan. That's a deal breaker for me.
mpattonm's Avatar mpattonm 03:18 PM 02-16-2012
soon to be mine
stm69's Avatar stm69 04:18 PM 02-16-2012
depends, has anyone found lav/madvr combo too great to give up?
Andy o's Avatar Andy o 12:19 AM 02-17-2012
why would you give up lav/madVR? This card should perform as good or better with those.

I myself was going to get a 7770 to get better gaming performance over my fanless 5770 (aftermarket cooler Accelero S1), but everyone is right, it's too expensive right now. I'm debating whether to get a 7750 without a performance gain, but massive efficiency gain. It also helps that I bricked my 5770 so now I'm using my trusty old 4670.
jakmal's Avatar jakmal 03:15 AM 02-17-2012
I will be doing more tests on the 7750 (mainly LAV Video Decoder in DXVA2 Copy-Back Mode + madVR) over the next two weeks or so.

There is a passive model coming up from Sapphire, the Sapphire 7750 Ultimate.

For current usage scenarios, my main concern is the chroma upsampling bug. This is what Hendrik (LAV Filters author) had to say to me in an e-mail exchange:

Quote:


If you run EVR, it'll use the GPU to upsample chroma, which is dependent on what the driver does. Its been broken before with AMD, and it'll be broken again i'm sure. I wouldn't trust my HTPC with a ATI card for long, their performance is too much driver dependent.

If i had to run ATI with EVR, i would use LAV Video to output RGB, which works around the issue (but has other drawbacks like no renderer deinterlacing)

AMD has excellent hardware, but really frustrating drivers. I am trying to get AMD to address this, but I am not sure whether HTPC performance is really their priority.
Insane HTPC's Avatar Insane HTPC 06:31 AM 02-17-2012
i would if it ends up crossfire comp. with amd trinity...

right now thats where i want my money to go, is the new APU that can play games by itself
Qaq's Avatar Qaq 08:02 AM 02-17-2012
Quote:
Originally Posted by jakmal View Post

For current usage scenarios, my main concern is the chroma upsampling bug.

You can try JanWillem32's EVR CP mods with HQ chroma sub-sampling and DXVA support.
jakmal's Avatar jakmal 11:26 PM 02-21-2012
Quote:
Originally Posted by Qaq View Post

You can try JanWillem32's EVR CP mods with HQ chroma sub-sampling and DXVA support.

I inquired in the Doom9 thread, and it is also dependent on the GPU driver for the chroma upscaling functionality.
Qaq's Avatar Qaq 11:55 PM 02-21-2012
OK, maybe I just got something wrong here.
Quote:
Originally Posted by JanWillem32 View Post

When the RGB 4:4:4 full range output of the renderer is left unprocessed by the display device (no digital processing, only digital-to-analog conversion for the panel), any form of chroma up-sampling in the renderer should give a better picture over nearest neighbor (especially if full picture resizing or aspect ratio correction is used by the renderer).


jakmal's Avatar jakmal 12:08 AM 02-22-2012
Quote:
Originally Posted by Qaq View Post

OK, maybe I just got something wrong here.

Hmm.. Hendrik also suggested something similar that I have quoted above:

Quote:


If i had to run ATI with EVR, i would use LAV Video to output RGB, which works around the issue

But, this means hardware deinterlacing is not available.. Can we get HW deinterlacing with JanWillem32's mods when output is RGB ?
Qaq's Avatar Qaq 02:00 AM 02-22-2012
Quote:
Originally Posted by jakmal View Post

But, this means hardware deinterlacing is not available.. Can we get HW deinterlacing with JanWillem32's mods when output is RGB ?

Nope. As far as I know for ATI cards DXVA (decode and de-interlace) only possible with NV12 from the decoder. Jan made set of shaders to correct the chroma (after DXVA) and integrated them in the rendederers (EVR CP, VMR9r) later. See the pic.
LL
lespurgeon's Avatar lespurgeon 11:57 AM 03-07-2012
It looks like the silent version is now in the wild: Sapphire HD7750 Ultimate Edition
KitGuru has a review. Fastest silent graphics card ever?

I'm eagerly watching AnandTech daily for Ganesh's updates on the HTPC use of the 7xx0 cards, hoping new fully-supportive drivers are available soon. I have to give a thumbs-up to AnandTech for covering HTPC use in its reviews of graphics cards. Some of us want to game and watch media on the same machine.
bimmerfreak0's Avatar bimmerfreak0 12:02 PM 03-07-2012
I just picked up the Sapphire 7770 from TigerDirect.com for around 120 after coupons and rebates fyi...it's not much more now than the 7750 and significantly more powerful.
jakmal's Avatar jakmal 12:36 PM 03-07-2012
Quote:
Originally Posted by lespurgeon View Post

It looks like the silent version is now in the wild: Sapphire HD7750 Ultimate Edition
KitGuru has a review. Fastest silent graphics card ever?

I'm eagerly watching AnandTech daily for Ganesh's updates on the HTPC use of the 7xx0 cards, hoping new fully-supportive drivers are available soon. I have to give a thumbs-up to AnandTech for covering HTPC use in its reviews of graphics cards. Some of us want to game and watch media on the same machine.

Thanks for trusting AnandTech Ryan, our GPU editor, covers the gaming aspects, and I pitch in whenever a GPU appears suitable for HTPCs (we didn't do any HTPC testing for the 79xx and 78xx, and not much will be done for the upcoming NVIDIA cards if they are not in the sub-75 W TDP category).

We will be reviewing the Sapphire 7750 Ultimate Edition (same model that KitGuru reviewed) around the end of the month, and I will make it a point to post here once the review is done.

One of the first things I checked out in the KitGuru review was the HQV score, and I am still suspicious as to how they don't seem to be seeing any Chroma Upsampling Error (the other scoring discrepancies are acceptable since they are quite subjective). Unless the latest drivers have somehow magically resolved the problem...
Davinleeds's Avatar Davinleeds 01:13 PM 03-07-2012
I'm interested in setting up the DDM Audio
stm69's Avatar stm69 01:18 PM 03-07-2012
From reading this thread, it appears that lav/madvr now support ATI cards? I thought they only supported nvidia, hence I bought a GT440 a little while back. Heck, never even set it up
bjterry62's Avatar bjterry62 05:28 PM 03-07-2012
My Gigabyte is scheduled for delivery Friday. Finally upgrading my 8500GT.

BT
Mnoe's Avatar Mnoe 05:40 PM 03-07-2012
Quote:
Originally Posted by stm69 View Post

From reading this thread, it appears that lav/madvr now support ATI cards? I thought they only supported nvidia, hence I bought a GT440 a little while back. Heck, never even set it up

That's funny. I started using madVR (day one) on a HD2600XT, then a 4770, then a 5670, then a 5450, then a 5770, and now currently, a Llano 6320 and a fanless 6570 (Powercolor). LAVFilters came around sometime in there, can't remember, but then that really just made things more stable because Nev has done such a great job (and, of course, madshi too).

I see a fanless 7750 in my near future...
StardogChampion's Avatar StardogChampion 06:04 PM 03-07-2012
Quote:
Originally Posted by Davinleeds View Post

I'm interested in setting up the DDM Audio

"Discrete Digital Multi-Point (DDM) Audio: DDM Audio provides multiple independent audio streams for audio-capable displays via DisplayPort or HDMI signals. DDM Audio delivers unique experiences in cases where multi-display video conferencing, directional audio or multi-room entertainment hubs are being used."

I am interested in the "multi-room entertainment hubs" part and what that means.
assassin's Avatar assassin 06:09 PM 03-07-2012
Quote:
Originally Posted by StardogChampion View Post

"Discrete Digital Multi-Point (DDM) Audio: DDM Audio provides multiple independent audio streams for audio-capable displays via DisplayPort or HDMI signals. DDM Audio delivers unique experiences in cases where multi-display video conferencing, directional audio or multi-room entertainment hubs are being used."

I am interested in the "multi-room entertainment hubs" part and what that means.

I think its the two-independent video/audio streams over HDMI and DVI option that NVidia and Intel have as well. Its a very nice option to have in HTPC.
Davinleeds's Avatar Davinleeds 06:42 PM 03-07-2012
It might be more or not. It's subbed under Eyefinity which I feel may restrict what "I" want.
renethx's Avatar renethx 07:01 PM 03-07-2012
Be careful that Sapphire HD7750 Ultimate Edition may not fit many microATX cases because of the tall heatsink (~20mm). Please somebody report back if it fits a typical microATX case such as GD05.


LL
bimmerfreak0's Avatar bimmerfreak0 05:06 PM 03-08-2012


Definately an upgrade over the ol' 4650. I have...like 1000 more options under Catalyst now. And it's way quieter oddly. Upgrades FTW!!!
renethx's Avatar renethx 05:14 PM 03-08-2012
Because HD 4650 DDR2 is close to a junk. HD4650: few deinterlacing options/fan control
assassin's Avatar assassin 05:18 PM 03-08-2012
Quote:
Originally Posted by renethx View Post

Be careful that Sapphire HD7750 Ultimate Edition may not fit many microATX cases because of the tall heatsink (~20mm). Please somebody report back if it fits a typical microATX case such as GD05.


It will fit. I just fit the ASUS GT430 fanless (4.4" tall) in my HTPC rebuild with the GD05...



The Sapphire HD7750 is 4.13".
renethx's Avatar renethx 05:44 PM 03-08-2012
Quote:
Originally Posted by assassin View Post

It will fit. I just fit the ASUS GT430 fanless (4.4" = 112mm tall) in my HTPC rebuild with the GD05...

The Sapphire HD7750 is 4.13" = 105mm.

I assume you don't actually own the Sapphire HD 7750 Ultimate Edition, reasoned based only on the date the manufacturer provides, hence you got a wrong conclusion.

- The height of PCB, including PCI Express pins, of a normal full-height graphics card is 112mm = 4.4" (standardized).
- The height of PCB, excluding PCI Express pins, of a normal full-height graphics card is 105mm = 4.13" (standardized).

ASUS fanless card is so cleverly designed that it fits *every* full-height case (because the height of the heatsink is the same as a normal full height card).

The height of the Sapphire card the manufacturer provides (105mm = 4.13") is just the width of the PCB without PCI Express pins, so it tells nothing about the heatsink.
assassin's Avatar assassin 05:47 PM 03-08-2012
Just going off Sapphire's own website:

Quote:


Dimension 170(L)x105(W)x43(H) mm Size.

http://www.sapphiretech.com/presenta...n=&lid=1&leg=0
renethx's Avatar renethx 06:03 PM 03-08-2012
Read my post carefully (and grab a normal full-height card and measure the PCB width if necessary).
assassin's Avatar assassin 06:05 PM 03-08-2012
Quote:
Originally Posted by renethx View Post

Read my post carefully (and grab a normal full-height card and measure the PCB width if necessary).

I saw your post. Just reporting the information that is available. Not any more details available.
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