Why is my GPU only using 533MB's of VRAM at max instead of 2GB's?

[PCGamesBeLike]

My 750 Ti's performance has improved, but for some odd reason it's only topping out at 533MB's of VRAM instead of the full 2GB's it has? Why is that? In all games such as BF4 and GTA IV, the frame rate is awfully low at 720p medium settings because it's only using 533MB's of VRAM.

 

All drivers are clean installed and latest and no form of VSync is on.

 

Specs:

i5-2320

Generic Acer Motherboard (which could very well be the issue but I am not confident)

8GB DDR3-1333 (which could also be the issue)

500W Cooler Master PSU

1TB HDD

[VG Docs]

That's GTA IV's secret. Its frame rate is always low.

 

Have you tried games other than BF4 and GTA IV to see if it's consistent throughout GPU intensive games?

[PaulKolby]

My 750 Ti's performance has improved, but for some odd reason it's only topping out at 533MB's of VRAM instead of the full 2GB's it has? Why is that? In all games such as BF4 and GTA IV, the frame rate is awfully low at 720p medium settings because it's only using 533MB's of VRAM.

 

All drivers are clean installed and latest and no form of VSync is on.

 

Specs:

i5-2320

Generic Acer Motherboard (which could very well be the issue but I am not confident)

8GB DDR3-1333 (which could also be the issue)

500W Cooler Master PSU

1TB HDD

this is weird,have you tried reinstalling the drivers?

[Coollok100]

At 720p I wouldn't expect GPU memory usage to be all that high, although GTA V seems somewhat suspect. It could well just be that the card is being bottlenecked somewhere else. Is the performance in line with what other people are seeing with this card?

[PCGamesBeLike]

That's GTA IV's secret. Its frame rate is always low.

 

Have you tried games other than BF4 and GTA IV to see if it's consistent throughout GPU intensive games?

Not really, but games like F1 Race Stars and NASCAR '15 that should be getting a butter smooth 60fps on my computer, is dipping into the 15-20fps range.

 

this is weird,have you tried reinstalling the drivers?

Many times, yes.

 

At 720p I wouldn't expect GPU memory usage to be all that high, although GTA V seems somewhat suspect. It could well just be that the card is being bottlenecked somewhere else. Is the performance in line with what other people are seeing with this card?

No, not at all. Similar people have been getting 60fps on BF4 720p HIGH with an i5-2320 and GTX 750 Ti.

[GM_Peka]

I would also possible point a finger at your motherboard, cheap crappy motherboard can do wierd things to performance, I remember when I moved my q8300 from a foxconn random thing to an Asus board and my fps doubled.

 

That doesn't mean to say it definitely is the issue though.

[PCGamesBeLike]

I would also possible point a finger at your motherboard, cheap crappy motherboard can do wierd things to performance, I remember when I moved my q8300 from a foxconn random thing to an Asus board and my fps doubled.

 

That doesn't mean to say it definitely is the issue though.

What GPU was backing that q8300 on? I'm pointing towards the MoBo, but I'm trying cheaper options right now.

[The Great Sayain Man]

 Try using a higher resolution and higher settings. Then report. 

[PCGamesBeLike]

 Try using a higher resolution and higher settings. Then report. 

BF4- Unplayable at low 1080p (10 or so fps)

GTA IV- Also unplayable at low 1080p.

F1 Race Stars- 20-ish at preset 1080p.

NASCAR '15- Can't start at 1080p.

[The Great Sayain Man]

BF4- Unplayable at low 1080p (10 or so fps)

GTA IV- Also unplayable at low 1080p.

F1 Race Stars- 20-ish at preset 1080p.

NASCAR '15- Can't start at 1080p.

Try Bf4 on ultra with full AA just to see how much Vram you're using. 

[PCGamesBeLike]

Try Bf4 on ultra with full AA just to see how much Vram you're using. 

It refuses to go over 533, occasionally will tip over though.

[PCGamesBeLike]

So, I'm assuming it's the motherboard. I might upgrade to this one:

http://www.ebay.com/itm/ASRock-Z75-Pro3-LGA-1155-Intel-Z75-HDMI-SATA-6Gb-s-USB-3-0-ATX-Intel-Motherboard-/291286874618?pt=LH_DefaultDomain_0&hash=item43d20cf9fa

 

The link's eBay, but Newegg's the seller.

[PCGamesBeLike]

Is the upgrade from PCI-E 2.0 to 3.0 worth it for the extra $25 on the MoBo cost?

[GM_Peka]

What GPU was backing that q8300 on? I'm pointing towards the MoBo, but I'm trying cheaper options right now.

I think it was a 560 ti.

[GM_Peka]

Is the upgrade from PCI-E 2.0 to 3.0 worth it for the extra $25 on the MoBo cost?

Doesn't make a difference, but most motherboards are 3.0 anyway.

[Enerjex]

You will still only get pcie 2.0 on a z75 motherboard as the sandy bridge chips only support pcie 2.0 (the ivy bridge chips make use of pcie 3.0). That said pcie 2.0 won't bottleneck a 750ti anyway. It's probably the oem motherboard causing the issues, maybe have a poke around in the bios (if you know what you're doing in there) before getting a new board, there may be a setting or 2 causing the issue. Oem bios's can be pretty locked down though.

[typographie]

My 750 Ti's performance has improved, but for some odd reason it's only topping out at 533MB's of VRAM instead of the full 2GB's it has? Why is that?

 

VRAM is a capacity—games will only fill as much of it as they need. It's not really normal to see your VRAM filled to the brim in every game.

 

You're only playing at 720p, that means fewer pixels and significantly less data than is needed at 1080p, 1440p, or 4K. Some in-game video settings can also reduce VRAM demands.

[PaulKolby]

BF4- Unplayable at low 1080p (10 or so fps)

GTA IV- Also unplayable at low 1080p.

F1 Race Stars- 20-ish at preset 1080p.

NASCAR '15- Can't start at 1080p.

there is either something wrong with you 750 ti or somehing, because i have an 860m and i can run 1080p in battlefield 4 in a mix of high and ultra settings and get near 60 fps

[PCGamesBeLike]

there is either something wrong with you 750 ti or somehing, because i have an 860m and i can run 1080p in battlefield 4 in a mix of high and ultra settings and get near 60 fps

I've had two 750 Ti's doing this, so this is definitely not a card issue.

[sgloux3470]

Could be the motherboard/PCI-E slot, but I'd still rather blame drivers.

 

Are you doing a clean uninstall with Display Driver Uninstaller from safe mode and then installing the new driver?

[PaulKolby]

I've had two 750 Ti's doing this, so this is definitely not a card issue.

there must be somethin else wrong in the system then possibly with motherboard

[Curufinwe_wins]

Just saying that if I can run most of those listed games on an oc'd 660m and a comparable cpu at 1080p (min settings ofc not good fps but playable) then there is something else really messed up. Mobo is my first guess.

[PCGamesBeLike]

Could be the motherboard/PCI-E slot, but I'd still rather blame drivers.

 

Are you doing a clean uninstall with Display Driver Uninstaller from safe mode and then installing the new driver?

Yes.

[VortexS]

VRAM is a capacity—games will only fill as much of it as they need. It's not really normal to see your VRAM filled to the brim in every game.

You're only playing at 720p, that means fewer pixels and significantly less data than is needed at 1080p, 1440p, or 4K. Some in-game video settings can also reduce VRAM demands.

He said he also tried bf4 on 1080p ultra and it still didn't go above 500 mb (which it definitely does on my rig).