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470GTX plays 24hz video smooth but GT440 stutters

juno_first

juno_first

juno_first

Soldato
Joined
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England
Ive turned an old rig into a media center, inc quad b3 @ 2.4, 4gb 1066ram @ 800 as its a p35 mobo.
I swapped the GTX 470 for a new GT 440 (810core 1600ram), although OCUK sell this card with an advertized 1800 effective ram speed (true if its overclocked, durr).

The 470 was able to play 1080p 23.976fps video totally smooth at 24hz (drivers set to 23hz), although the GT 440 in the same rig stutters the video every few seconds which is very annoying.
Granted, the only drivers that could play video stutter free were 258.96 & ive hacked these drivers to work with the 440 too, but the video still stutters, so do all other drivers ive tested though 258.96 still stutter less.

Im wondering if the 440 is not quick enuogh to handle 1080p video poroperly or it cant do 23hz properly.

Oh, one quirk of this 440 is if the FSB is set to anything other than auto, it wont fully post, even if the FSB is set at the proper 266mhz manually.
Also, I had to use a 440 as the older 8800GTX cant handle HDTV as it dont have good enough CUDA.

Does anyone know a fix for this card, else I'll have to use a monster GTX470 to play videos :eek:
ta
 
Ahh, I think Ive found a breakthrough as to why this card cant play 1080p video very well compared to a GTX470.

The actual RAM speed of the card is 533Mhz or a 1066Mhz data rate as reported by the drivers. The website advertizes the RAM as - Memory Clock: 1800MHz (Effective).
Does this give me grounds return the card & get a faster card which can handle 1080p properly?
 
i was going to buy the 440 also until i read the problens on the net/the 450 is a lot better
 
I would have thought the GT440 overkill for 1080P videos. Something's up there. If you can, perform a fresh install/new partition and see if that helps.
 
Ive re-installed 32/64 a few times & tried different codecs etc.
The GTX470 is just able to manage 1080p smooth with most setups, also HDTV.

Yeah, the BIOS must be borked on the card to not allow manual setting of the FSB.
Actually Sparkle tweaked the BIOS for better cooling capabilities, maybe they messed something up?
I was going run the media rig at a lower clock speed too.

Hehe, the 470 is overkill just to play videos.

Just found another hicup with the 440, which is it does a bad 3 second stutter with HDTV (PAL 25fps at 50hz) every 10mins, using default M$ DTV codec.
I cant believe the gt430 is being promoted on the net as a good media card.
Maybe its the 1066Mhz video RAM?

Well its packed in its box now as its only a few days old & I'll take it back OCUK tomorrow & hopefully they'll fix the website to show the actual RAM speed so anyone else interested in this card knows the correct specs.

I presume OCUK will refund the full price, which I'll put towards a faster card when I get paid in a couple of weeks.
I was thinking of a 480 for my main rig & using the 470 in the media center :)
 
I agree with the guys above. Something doesn't sound right there, my 470 isn't "just able to manage 1080p". It handles them with ease and I would imagine a 440 should too.
 
it has nothing to do with the ram. in all likelyhood, considering you only found ONE driver that worked with the 470, i'm pointing my finger at the drivers.

video decoding needs very little memory bandwidth. Afterall, my fathers ati 5450 manages it just fine. as does the 3470 in my laptop, even.
 
I play everything in wmc but wmplayer and media player classic use the same codecs.
Just core-avc for video gpu decoding, haali and either ffdshow or ac3filter for audio. Any codec pack I've discovered is like openning a can of worms.
Oh, no audio filter can handle dtshdma, unless converting to ac3 when playing, not tried a geforce tho,lol.

Yes, playing a 1080p is easy for a 440 but playing 23.976 fps is not easy to do smooth.
 
ffdshow tryouts handles dts:ma just fine, actually. using MPC-HC and ffdshow tryouts, i can either bitstream or decode both dts:ma and dolby trueHd. VLC also decodes them

Yes, playing a 1080p is easy for a 440 but playing 23.976 fps is not easy to do smooth.
Click to expand...

that tells you it isnt a memory issue.
 
Last edited:
The 440 is a different Fermi chip, or maybe anything else to do with the architecture is affecting refresh rate dependent video playback, plus drivers adding to the mix.

I'm using the differently advertised memory speed as an excuse to return the card which is not suitible for the purpose. Then getting a card I know that works.
A shame, as the low power 440 would have been ideal, it even ran at 23c when idling and 30c playing a video.
 
I have a video which is dts HDma and ac3filter can't play it and ffdshow will only play if forcing ac3. Oh, I use digital output, else I think it would be ok.
This thread is now trespassing onto the home hifi section.
 
Good news, OCUK have said they've refunded the full amount for the card, so I presume the RAM was running at 1066Mhz & not 1800Mhz.
I think they should fix the webpage to report the correct RAM speed though.

Im now going donate the GTX 470 to the media center as a 440 didn't cut the mustard with regards to refresh rate dependent video playback & its not worth taking a risk with eg a 450.

In a couple of weeks I'll have around £200 spare for a new card for the main rig (quad G0 at 3.7, 1030 RAM).

The 470 manages Crysis2 multi-demo at 1920x1080 hardcore between 40-70fps, though im thinking the single player game will be more munchy.
The 470 is clocked at 800core, ram default, as the tower has good ventallation.

I was thinking of getting a GTX 480 & clocking it a little, with Crysis2 in mind.
Although, I dont know if the 480 is a worthy upgrade from a 470 & if it will be playable at 1080p full quality except AA.

My other choices in this price range are a GTX560 or ATI 6950.

Im not impressed with the 384 shaders of the 560 & I dont know anything about the 6950.
Does anyone have any thoughts in this matter? ta
 
GTX 470 just for videos in an HTPC is way over the top, not just for being overspecced but also using far too much electricity for the purpose. Keep it in your main rig or sell it and get a lower spec card.

Upgrading to a GTX 480 would not be a massive step up.
 
Yeah the 470 is overkill just to play vids, but I dont want risk buying a 450 and finding out it cant play vids the way I want.
It does underclock to 51Mhz when idling though.

Pity broadcasters changed the HD bitstream, else Id still be using the 8800GTX with its 384bit memory interface.

Yes, my current 470 is running virtually as fast as a stock 480, so unless I can overclock a 480 a lot, then there wont be much of an improvement.
Woow, the 570 does not look much better than a 470, just a little faster on the clocks.
 
With the 1900x1200 crysis cards comparison on guru3d:

470=42fps
470=48fps mine overclocked 800Mhz ?
480=51fps
580=62fps
480=64fps overclocked 830Mhz Core 1660Mhz Shader 2100Mhz Memory (4200Mhz)

Based on this rough guide & a little luck, if I get a 480 then the fps will increase from 48 to 64fps.
I presume ATI is a non option unless going for their monster 6990.
 
Overslop said:
AMD 6950 unlocked to 6970 is a very good card for the money. Still not worth changing from a GTX 470 for though.
Click to expand...

Hay thats a good idea, I never thought of that & have not had an ATI since turning ax x800pro 8pipe into an xt16pipes, by flashing.

Im looking at the huge thread on this subject now, phew, a lot of learning...
 
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