Does memory bandwidth matter?

[orangecat]

I'm thinking about getting a new GPU soon to upgrade from my GTX 460 and i was looking at the 750Ti just for fun and I noticed it has less memory bandwidth. Does this even matter? i want my games to run better and I only plan on playing games at 1080P but mostly what i'm looking for is more than the 768MB of ram i got now and a bit more performance. I would like a 760 or 770 but i don't know if that will be in my budget.

 

http://gpuboss.com/gpus/GeForce-GTX-750-Ti-vs-GeForce-GTX-460

[AlwaysFSX]

It does matter but if the memory speed is faster that can make up for it.

[The Crazed Child]

It does matter but if the memory speed is faster that can make up for it.

I agree. I used to think that an 128-bit memory bus could only use 1GB of VRAM but I learned a bit more about it and found that is was false.

[VSG]

It does matter but if the memory speed is faster that can make up for it.

 

You know memory bandwidth is calculated from memory speed, right?

 

Memory bandwidth comes in handy at high resolutions, especially when racking on anti-aliasing. For example, I had to overclock my 780Ti to 1450+ MHz core to get better framerates than a 290x at 1200 MHz core on Batman Arkham Origins at 1080p and 8xAA.

[AlwaysFSX]

I agree. I used to think that an 128-bit memory bus could only use 1GB of VRAM but I learned a bit more about it and found that is was false.

What would be nice is if we can have high bandwidth and good speeds.

[AlwaysFSX]

You know memory bandwidth is calculated from memory speed, right?

 

Memory bandwidth comes in handy at high resolutions, especially when racking on anti-aliasing. For example, I had to overclock my 780Ti to 1450+ MHz core to get better framerates than a 290x at 1200 MHz core on Batman Arkham Origins at 1080p and 8xAA.

Surprisingly enough, I do.

[orangecat]

You know memory bandwidth is calculated from memory speed, right?

 

Memory bandwidth comes in handy at high resolutions, especially when racking on anti-aliasing. For example, I had to overclock my 780Ti to 1450+ MHz core to get better framerates than a 290x at 1200 MHz core on Batman Arkham Origins at 1080p and 8xAA.

Yea but I'm currently sitting around 100Gbps on my GTX 460 and a 750Ti is about 86Gbps thats why i'm wondering if it would drop my FPS.

[VSG]

Yea but I'm currently sitting around 100Gbps on my GTX 460 and a 750Ti is about 86Gbps thats why i'm wondering if it would drop my FPS.

 

The better clock-to-clock core performance will more than negate any effects of that 14 Gbps difference of bandwidth. These two cards aren't really for high amounts of AA anyway so I don't think you will feel the effect of reduced bandwidth. Remember that you can also OC that 750Ti to reduce that difference.

[mvitkun]

Yea but I'm currently sitting around 100Gbps on my GTX 460 and a 750Ti is about 86Gbps thats why i'm wondering if it would drop my FPS.

http://www.guru3d.com/index.php?ct=articles&action=file&id=9204&admin=0a8fcaad6b03da6a6895d1ada2e171002a287bc1

http://www.guru3d.com/index.php?ct=articles&action=file&id=9200&admin=0a8fcaad6b03da6a6895d1ada2e171002a287bc1

[The Crazed Child]

There was a rumour that NVIDIA was going to cheap out on their 800 series by using a narrow memory bus but with high memory speeds.

[VSG]

There was a rumour that NVIDIA was going to cheap out on their 800 series by using a narrow memory bus but with high memory speeds.

 

No, the rumour was about increased L2 cache. This does make memory bandwidth less of an issue if true though.

[The Crazed Child]

No, the rumour was about increased L2 cache. This does make memory bandwidth less of an issue if true though.

I'm quite sure that I heard about a narrow bus width on Maxwell. In fact it's already happening on the mobile parts, the GTX 880M has 8GB of VRAM on a 256-bit bus. Anyone would think that NVIDIA has gone crazy.

[VSG]

Everyone should indeed think they have gone crazy but it is an excellent marketing tactic. I hate to stereotype here but most laptop gamers would look at those 8 gb of VRAM and go "mine is better than your desktop 780 Ti because it only has 3 GB of memory". The 256-bit bus can barely saturate 2 gigs of memory (As on my laptop GPU) that the remaining 6 gigs may well just be pieces of black plastic for show.

 

Having said that, the 880m is not a maxwell card. It is a rebrand of the 780m which is turn is a rebrand of the 680mx so this doesn't mean much for desktop Maxwell mid-high end cards.

[melk]

750 Ti FTW card

 

Mine clocks to 1405mhz core, 3300/6600 memory resulting in 105 GB/sec memory bandwidth

 

I love this card!

[orangecat]

I'm quite sure that I heard about a narrow bus width on Maxwell. In fact it's already happening on the mobile parts, the GTX 880M has 8GB of VRAM on a 256-bit bus. Anyone would think that NVIDIA has gone crazy.

We need double digit vram.

[Bagmup]

We need double digit vram.

And $200 4K monitors..