P370EM a little problem with my CFX 7970M

Hello !

I dont know if it's a problem or not
it's abount total memory of my CFX 7970M
On my 3DMark's benchmark it's says i have 3074Mb, logicaly there are 4096Mb

AMD Radeon HD 7970M video card benchmark result - Intel Core i7-3740QM Processor,CLEVO P370EM score: P32366 3DMarks
AMD Radeon HD 7970M video card benchmark result - Intel Core i7-3740QM Processor,CLEVO P370EM score: P10209 3DMarks

Do you that is a bug or an hardware problem ?

 

Actually there is 2gb on a 7970.

 

?! , the OP has 2 7970s so that makes it a total of 4 GB but 3d mark is showing only 3 GB , so this means 1 GB missing.

I suggest you download this :

Process Explorer

launch it and click on 4 boxes that has small graph in it . A new window with detailed graph will pop will show summay, cpu, I/O, gpu. Click on the gpu , and see under dedicated gpu memory it shoud say 4 GB , mine says 2.1 GB . if did not work , add the exe to ccc and set it to high performance just in case if does not recoginze without doing that


Side note : this is the best program that I use to track gpu usage, cpu usage , etc, all in one . I recommend it .

 

I missed the CFX part. Was laying in bed looking on my phone. Yeah total of 4 then. Seems like I've seen this before. Ill see if I can find the info.

 

Here is a screenshot



is it ok ?

PS : Many thanks for kimg601, i confirme your program (Process explorer) is a very good program

 

If you look at the limit it says that memory limit is 4122960... In kilobytes Which is exactly 4 GB , so your good to go

Sent from my Galaxy Nexus using Tapatalk 2

 

ok !
many thanks !
so, the isue's source is either 3DMarks or Drivers or Hardware...

Wait and see the future drivers (maybe catalyst 13.1) to solve this isue

 

You may need to update the system info tool, but it's mostly irrelevant as there are more reliable programs (CPU-Z, GPU-Z for example) to extract hardware info.

Also note that in crossfire cards do not add memory since each card must contain an identical set of data for data coherency.

 

+1, both the cards run in parallel, so in practice you are rendering one scene on two cards, so only 2GB is being used during CF.

 

when you talking about "the card must contain an identical set of data for data coherency", is it the GPU's vbios ?
coz the two cards have the same vbios in GPUZ

 

No I mean the two sets of data that it stores in its graphics ram (the 2GB per card) must be identical.

If one card alters data, the other must know and change its data otherwise they would be working from different data and start producing wildly different images.

So much like a raid 1 hard drive array where both hard drives have a copy and any writes go to both.

 

so ?
is it an issue ?
if yes what is the origine of this issue ?

just for information, i make a clean windows installation and i still have this problem (if we can consider this is a problem )

what i have to do to solve this ?

 

a little up !

 

There is no issue, your cards are working normally, the system info detector is just a little off in 3dmark especially with newer products. If the cards did not manage their memory properly games would simply not run, it would all go haywire in short order.

Like any other crossfire or SLi user you have 2GB (one cards worth) of storage space, 2GB is plenty so this is not really an issue for you.