SLI memory usage

Burgerbob said:
It uses both, or one card would be really slow.
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He means does it combine them to make 512MB, or mirror them so you still only have 256MB.

As far as i know, it just mirrors the memory. So you still only have 256MB of memory.
 
I just checked google and ya it just mirrors it... But if it combined both I couldnt imagine 2x512 7900GTX/x1900Xt's! 1GB of video memory!
 
hmm.. so it might not be worth SLI right now... thanks guys
:( lol
this makes me sad i want 512mb of vram... its so much faster than system memory though!
 
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Get a 7900GTX with 512MB and that'll solve your VRam problem...thing is, have you got $500 lying idly to get one!! :/
(you could get a dual 7800gt which would also set you back $500 but id say it would perform much better than the 7900gtx)
 
Get a 7900GTX with 512MB and that'll solve your VRam problem...thing is, have you got $500 lying idly to get one!! :/
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He ordered it already, and said goodbye to HDR/FSAA support. The X1900XT would have been better value. After all, isnt eye candy what these high end cards is for? :)

you could get a dual 7800gt which would also set you back $500 but id say it would perform much better than the 7900gtx
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Not really.
 
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yea, it would... if i didn't already have a 7800gt that is.
HDR FSAA? aren't those like movie watching features? because... i don't really watch many movies with my computer. but still explain to me what it is because maybe im thinking of something else. anyways, the x1900xt is a bit more expensive and they both perform in the same area. i could get a second 7900gtx and put it in SLI if i'd like though :) haha that didnt work out with the 7800gt though they kind of got rid of the 78's with the 79's... less so than the 6800ultra though! lol that thing is GONE!
btw anyone wanna buy a 7800gt? lookin to sell now! :)
oh yea.. HDR/FSAA... explain! but ill google it just incase
 
fade2green514 said:
http://www.behardware.com/art/imprimer/605/
how come some of the benchmarks have the 7800gtx using fsaa and hdr then? im confused. truly, im confused.
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If you read what it says on that site:
Because of FP16, the GeForce can´t use antialiasing with HDR. New cards increase performances, but the difference isn´t that great compared to the X1800XT. The CrossFire is very useful and 1600 x 1200 is almost playable. High resolution, HDR, FSAA what more can you ask for?
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You see Tweaker was right.
 
nVidias hardware today can not run true HDR and AA simultaneously while ATi's X1xxx GPU's can.

If you're buying a high end card today, that is something to take into consideration, most people dislikes jagged edges. Theres other advantages with the ATi route, but this HDR/AA issue is what high end gamers mostly should think about before forking out their money.
 
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fade2green514 said:
HDR FSAA? aren't those like movie watching features? because... i don't really watch many movies with my computer. but still explain to me what it is because maybe im thinking of something else.
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You know what they are.

FSAA helps remove the jagged edges from polygons, and HDR makes things look nice and bright and stuff like that.
 
yea my monitor bottlenecks my 7800gt. HAHA
7900gtx... uhh 1280x1024 just ain't gonna cut it. not for CRT at least lol
anyways.. FSAA is just AA then?
whats HDR... and nvidia supports FSAA... just not the two simultaneously then?
again, whats High Dynamic Range actually do then?
whats the difference between FSAA and AA if any lol
 
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well i know what AA and AF are.. and res. and most other things i've just never seen HDR under a games quality settings yet...
so HDR is just a better form of lighting? i notice the difference... but i actually like wiki's screenshots of it without HDR better... lol i think it looks more fake with the extra light.
AVIVO now what does that do exactly? i mean it says it enhances it for encoding video or something or other, but why bother... converting a divx file to dvd only uses 88% maximum of my CPU... and priority was set to realtime.
but wut does avivo do?
can nvidia's cards do HDR without FSAA? lol
why can't they do both at the same time if they can do each seperately?
lol wut do i care if the 7900gtx doesn't support it.. i've had settings maxed for my 7800gt without lag on most of my games anyways.
my video card doesn't play the games anyways... i do :P lol
besides, i didn't buy the card... my uncle bought it for me, for my graduation :)
 
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Dual Dual-Link DVI
NVIDIA SLI technology
High dynamic-range (HDR) Rendering Support
NVIDIA PureVideo technology
Integrated HDTV encoder
CineFX 4.0 Engine
UltraShadow II Technology
64-Bit Texture Filtering and Blending with Advanced Memory Control
NVIDIA Intellisample 4.0 technology
NVIDIA ForceWare Unified Driver Architecture (UDA)
NVIDIA nView multi-display technology
NVIDIA Digital Vibrance Control 3.0 technology
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taken from newegg under the card i bought. it supports HDR... shouldn't it support both together then? lol i duno...
is it just a driver issue, and will they fix it?
 
AVIVO now what does that do exactly?
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http://www.driverheaven.net/articles/avivo/
http://www.ati.com/technology/Avivo/index.html


i mean it says it enhances it for encoding video or something or other, but why bother...
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And decoding.
Ever played back H.264 1080 HD media on your computer? Quite CPU demanding.. Something which the X1xxx/GF7 (some GF6) series cards can accelerate.

it supports HDR... shouldn't it support both together then? lol i duno...
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Nvidia's cards cannot do HDR+AA at the same time, its either one or the other as its a hardware limitation.
 
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