[SOLVED] My rx570 8gb have only 4gb? xDD

[AGBoris]

Hi. I bought sapphire nitro rx 570 8gb before half of year. Today I tried some benchmarks because I put auto overclock in settings.
And benchmark shows graphic using 4gb vram.
Also, gpu-z showing this, 4096mb??? : http://gpuz.techpowerup.com/20/10/21/zxq.png


MSI Kombustor showing 4gb, but USING 2gb: http://prntscr.com/v3v44n

But in task manager, video memory showing 8gb http://prntscr.com/v3v3g4


I am so confused.......

 

[ChumP]

Task manager shows correctly.
Those 8 GB shown there results from adding the Shared GPU memory too... the other 4 GB can be shared from your RAM (not VRAM) with the GPU. The additional memory might be used if an application asks for more VRAM than the card has.

Dedicated GPU memory is what your GPU actually has... it's 4GB.

Also, MSI Kombustor is using only 2GB because that's what it needs during the benchmark... it won't use all of your VRAM if it doesn't need to.

 

[AGBoris]

So, my graphic card is 4gb, not 8gb?

 

[ChumP]

So, my graphic card is 4gb, not 8gb?

Yes, basically.
Pretty sure you bought the 4GB version and not the 8GB... have you bought it used?

 

[AGBoris]

Yeah.. I got scammed xD

 

[ChumP]

Yeah.. I got scammed xD

Pretty much... next time make sure you test the card properly before buying it.

 

[AGBoris]

Thats for sure...

Comforts me that I check differences in fps in some games, between 4gb and 8gb, sometimes there is no difference, or 8gb have a little more fps...

 

[ChumP]

Thats for sure...

Comforts me that I check differences in fps in some games, between 4gb and 8gb, sometimes there is no difference, or 8gb have a little more fps...

There shouldn't be any difference if the game requires less than 4GB of VRAM... both variants use the same GPU basically, just more memory on the 8GB version.
On higher resolutions(1440p, 4k) or textures where the game requires more than 4GB the difference will become notable... you might encounter stutters, textures not loading properly and so on. The card might also try to access that shared memory, but that'll be much slower compared to its VRAM, hence lower framerates.

If you're playing at 1080p, that's after all the intended resolution for this GPU, you should be fine and the card will be identical to the 8GB variant in most cases.