NVIDIA and ATI HDCP Compatible Graphics Cards Roundup
by Josh Venning on November 16, 2006 12:00 AM EST- Posted in
- GPUs
Gigabyte GeForce 7600 GS HDMI
The first card we have from Gigabyte is the GeForce 7600 GS HDMI. The 7600 GS is a mainstream performance part, and it's the only 7600 GS we have for this review. This Gigabyte version is clocked at reference speeds, with a 400 MHz core and 400 MHz memory clock speed. A few of the cards in this roundup come with HDMI connections, and this card is one of them. It also has a DVI and an S-Video output alongside the HDMI port.
The HDMI version of the Gigabyte 7600 GS is nearly identical to the non-HDCP capable version of the card, with the exception of a wire extending from the back of the card which is used for connection to a sound device. This enables users to make full use of the audio capabilities of the HDMI connection.
Gigabyte GeForce NX7950 GT
The other card we have from Gigabyte is a more powerful GeForce NX7950 GT (GV-NX795T512H-RH). This is one of the more unique cards we have for this review, firstly because it uses a Zalman HSF instead of the reference cooler. We've found these Zalman fans to be very effective at dissipating heat and keeping noise levels down, even though they are a bit more delicate than other designs.
This card also has an 4 pin drive connection for its power interestingly enough, which is different from any of the other cards we have here for this review, and it's been a while since we've seen this kind of power connection on a graphics card. The NX7950 GT is equipped with 2 DVI ports and is clocked at the standard 550MHz core and 700MHz memory.
The first card we have from Gigabyte is the GeForce 7600 GS HDMI. The 7600 GS is a mainstream performance part, and it's the only 7600 GS we have for this review. This Gigabyte version is clocked at reference speeds, with a 400 MHz core and 400 MHz memory clock speed. A few of the cards in this roundup come with HDMI connections, and this card is one of them. It also has a DVI and an S-Video output alongside the HDMI port.
The HDMI version of the Gigabyte 7600 GS is nearly identical to the non-HDCP capable version of the card, with the exception of a wire extending from the back of the card which is used for connection to a sound device. This enables users to make full use of the audio capabilities of the HDMI connection.
Gigabyte GeForce NX7950 GT
The other card we have from Gigabyte is a more powerful GeForce NX7950 GT (GV-NX795T512H-RH). This is one of the more unique cards we have for this review, firstly because it uses a Zalman HSF instead of the reference cooler. We've found these Zalman fans to be very effective at dissipating heat and keeping noise levels down, even though they are a bit more delicate than other designs.
This card also has an 4 pin drive connection for its power interestingly enough, which is different from any of the other cards we have here for this review, and it's been a while since we've seen this kind of power connection on a graphics card. The NX7950 GT is equipped with 2 DVI ports and is clocked at the standard 550MHz core and 700MHz memory.
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rnemeth - Friday, December 1, 2006 - link
I personally think this article was extremely on point with the direction of media components in general. I think there will be many people out there, like me, who are planning on the convergence of the Media Center PC & Gaming PC. Vista (Ultimate) will bring Media Center to the masses and why shouldn't you be able to play your favorite DX10 "Game for Windows" on your big HDTV as well?
This article is ahead of its time. HDPC/DRM/HDMI/DVI/BR/HD-DVD/HDTV is all in the early stages. In the future, you will be able to buy or rent your high-def movie by downloading it to your PC with DRM finally figured out. This review shows us that it is not all there yet, but gives us an idea who is doing what, and what we need to look for.
You mentioned in the beginning of the article that you were looking for feedback to see how interested your audience is on this subject... count me as 1.
thejez - Sunday, November 26, 2006 - link
HDCP is a joke... look at how hard it is to understand and get this stuff running... not to mention you have upgrade all your hardware?? lol and who watches movies on their PC anyway?? do you people really sit huddled over your keyboard watching movies?? Why not invest in some better equipment for the family room and watch movies they way they were intended....but the difficulty in setting all this up makes it even more important that hdcp has already been cracked... i wouldnt let the movie industry tell you your hardware isnt good enough to buy their content... just buy what you want and "work" around the issue later... the cracks are only getting better.... we'll see HD-DVD Shrink soon enough...
KalTorak - Monday, November 20, 2006 - link
Careful - it's not safe to assume that higher bitrate content is more computationally difficult to decode than lower bitrate content. [In fact, I suspect they're weakly correlated the other way - lower bitrate is harder.]DerekWilson - Monday, November 20, 2006 - link
ahh ... very interesting ...it would make sense to me to say that both are true.
In the case where low bitrate means more aggressive high quality encoding, i absolutely see your point. But low bitrate can also mean lower quality (less information) at the same level of encoding -- in these cases lower bitrate will be easier to decode.
Thanks for pointing this out.
Badkarma - Monday, November 20, 2006 - link
Hi Derek,Can you comment on HD audio formats like Dolby TrueHD and DTS-HD for the HTPC? I know Bluray has yet to use these formats but how about HD-DVD on the HTPC. From what I understand, you could get these formats outputted via analog output on your soundcard, but I'm interested in HDMI. I know some of the HDMI video cards you reviewed have SPDIF passthrough via HDMI, however SPDIF cannot carry Dolby Digital +, TrueHD, or DTS-HD, it will only output DTS or DD. I'm holding back on a HDCP video card because HD audio is an important part of HD movies.
Thanks.
Ajax9000 - Sunday, November 19, 2006 - link
p.13 "Both the 8800 GTX and GTS are fully HDCP compatible, and HDCP is enabled through both DVI ports" p.22 "Some of the cards, like the HDMI Gigabyte 7600 GS and ASUS EN7600 GT, were only able to play our Blu-ray movies over HDMI and not through the DVI port. Conversely, we found that with our MSI NX7600 GT Diamond Plus, the Blu-ray content wouldn't play through the HDMI connection but it would through the DVI port."OK, so which cards (other than the 8800s) could do HDCP over both ports?
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p.19 "The end result is that an NVIDIA card with more pipelines that is better at 3D performance will not necessarily be better at video decoding."
In other words overclocking (say) a 7600 is likely to give as good or better HD video results than using (say) a 7950GX2?
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p.20 "In the future, we could see power consumption go down with acceleration enabled. As graphics hardware is better suited to processing video than a CPU, efficiency should go up when using hardware acceleration."
The results for the 9750GTs already seem to show this 147W average non-accelerated >> 142 for EVGA & PNY (although Gigabyte > 148W).
Adrian
chucky2 - Friday, November 17, 2006 - link
...can we get it added to these results just for comparison?Also, you don't happen to know when that'd be, would you? :)
Chuck
BigLan - Friday, November 17, 2006 - link
I noticed that in the cpu utilisation tests you said it was around 51% for no acceleration - was this because the player software is single threaded and so only used one core?Also, is click encoded in h264, or mpeg2 like the initial bluray discs?
DigitalFreak - Friday, November 17, 2006 - link
Now that the Xbox 360 HD-DVD drive is available and is proven to work with a PC, any chance on doing another round-up "real soon now" using HD-DVD? I'd really love to see the numbers for VC1 and H.264 decoding.Still amazed that the lowly X1600 card spanked all Nvidia cards but the G80 boards in CPU utilization.
Good job guys.
DigitalFreak - Friday, November 17, 2006 - link
BTW, the new releases from Fox on Blu-Ray use the H.264 codec. Behind Enemy Lines, Fantastic 4, etc. I think Behind... is already out.