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So LinusTechTips claims 6990 has 4GB memory - Page 2

post #11 of 42
What is said is true, is it not? There is 4GB of ram on the card. No where did he state that it's usable. *maybe, i didn't watch the video*

Also, the *card* does have a 512-bit memory controller. It's 256-bit + 256-bit, correct? What do you think a 256-bit memory controller is? It's really, 64-bit x 4. By your argument, current 256-bit memory controllers should really be called 64-bit.
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post #12 of 42
Thread Starter 
Quote:
Originally Posted by compudaze View Post
What is said is true, is it not? There is 4GB of ram on the card. No where did he state that it's usable. *maybe, i didn't watch the video*
Yes it is true. But he did not state anything about usable amount and that's the problem. Potential customers are deluded to think that it has 2x more video ram that can be put into use (store textures etc...)

Quote:
Originally Posted by compudaze View Post
Also, the *card* does have a 512-bit memory controller. It's 256-bit + 256-bit, correct? What do you think a 256-bit memory controller is? It's really, 64-bit x 4. By your argument, current 256-bit memory controllers should really be called 64-bit.
If you read the OP clearly you can understand why i did say that the card is 256bit. I stated the reason there.

Another proof of 6990's being 256 bit:
Overclock a 6990 to 6970 level and compare the benchmark results with 6970 Crossfire. Any difference bigger than margin of error? Nope. But an increase like from 256bit to 512bit has to be observed right?. So it's not 512bit.
Edited by Nautilus - 4/2/11 at 9:04am
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post #13 of 42
It's a dual-GPU. 2GB per GPU on the card. Since it's basically Crossfire on a single card, each GPU is treated as a separate card. So yes, it's 4GB, with 2GB usable per GPU.

So, what exactly is the problem? I thought everyone realized this about dual-GPUs.
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post #14 of 42
Oh my God! It's the end of the world has we know it! It's a conspiracy!

Another 6990 ''controversy'', just like the ''yellow warranty sticker of doom''!

Sigh.
    
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post #15 of 42
u just jelly he has a show and u dont.
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post #16 of 42
Linus is awesome. Haters.

Also OP: Regardless of the fact that the 2GB set are mirrored to one another, you can't disagree with the fact that there is 4GB of VRAM on the card. Regardless of how it is used.
Edited by GoTMaXPoWeR - 4/2/11 at 9:31am
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post #17 of 42
The card has 4. It is physically on the card. Anyone buying that card will know the difference or has too much money to care.
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post #18 of 42
he's right. it physically has 4GB of vram, and not only 2gb are used, each GPU uses 2GB to store all the textures because each one has to store every texture whether the screen hooked up to it has the texture on it or not
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post #19 of 42
Quote:
Originally Posted by subliminally incorrect View Post
u just jelly he has a show and u dont.
hahaha
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post #20 of 42
Quote:
Originally Posted by JustusIV View Post
Ummm that is exactly the way it is in real life......

HD manufactures use 1000 kilobytes to a meg
While computers count it as 1024 to a meg
So you get way less space on a HD then advertised.
I dont really know or care... but if the ram runs in lockstep then yes there is actually twice as much ram there. Just cause "you" cant use it doesn't mean it isn't there. The card still needs it to function.
LOL
You couldn't be more wrong. It's Windows that's wrong in this case. One GB = 1000000000 bytes (one billion bytes). HD manufacturers are giving exactly what they advertise.

Windows OTOH measures in GiB (one GiB = 1073741824 bytes/1.073 billion bytes), but reports the result with the unit GB. This is incorrect and should be GiB.

Analogy:
A car moves 20 meters in 4 seconds. 20 m / 4 s = 5 m/s, but instead you write 5 kg. The unit doesn't fit the calculation. This is of course exaggerated, but it's basically what Microsoft does in Windows.
Edited by B!0HaZard - 4/2/11 at 9:36am
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