128 Bit vs 256Bit.

Usman Sajid

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Jul 27, 2013
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I have GTX 750 TI OC to 1.2Ghz.
HD 7850 is equal to my card but it has 256Bit.

What are disadvantages of 128bit.
I heard it lags in AA.

Please tell me settings which are not good for 128bit so i can turn off and play smoothly.
Would really helpful for others.

BTW i use FXAA
 
The only disadvantages of a shorter bus width (128bit and 256bit) is just less bandwidth being fed to your card. Unless you're doing a tri or quad sli/x-fire I wouldn't worry much about it. From just glancing at the two companies nvidia is a bit more optimized with their PCI lane usage than AMD is. It's mostly just numbers for advertising when it comes down to it.
 
128 bit cards are slow than 256 bit cards.The memory bandwidth of 256 cards are really great..AA drops down all the fps.And on 128 bit cards,playing with AA on is really impossible.But on 256 bit cards,you can play with AA on..That is why the 256 cards are priced more than 128 bit...If you have a good budget just get 256 bit card.You dont need to change your gpu too soon if you get a 256 bit card.In case if you get 128 bit card,i bet you definitely change your gpu in 1-1.5 year.So better get 256 bit.If you dont have enough budget to get it,wait till you get your budget by saving some money and then go on with 256 bit card.Select it as best answer if it helped you.,
 
The main benefit of a 256bits interface over a 128bits one running at the same frequency is the GPU has twice as much bandwidth to work with.

The main things affected by it is high resolution textures, high resolution displays and FSAA... stuff that can easily double the amount of bandwidth needed assuming the GPU has the processing power to match.
 



thanks a lot for the information dude
 
I was wondering whether 128-bit vs 256-bit was an important issue and found this while comparing some of the major, newer video cards on the market selling over at Newegg:

NVidia
GTX 980 Ti 6GB - 384-bit
GTX 970 4GB - 256-bit
GTX 960 2GB & 4GB - 128-bit
GTX 950 2GB - 128-bit

AMD
R9 380 - 256-bit
R9 290 - 384-bit
R9 390 - 512-bit

Seems the bit rate has something to do with the specific card design, at least with NVidia cards (I'm more familiar with them). For example, all the NVidia GTX 960 cards from MSI, ASUS, Gigabyte, EVGA, ZOTAC, etc. whether 2 GB or 4GB have a 128-bit memory interface, and all the GTX 970 cards are 256-bit, no matter the vender. Just thought this was interesting...
 


well should I go with the EVGA GTX 960 (1304MHz)4gb or with Saffire r9 380(1010mhz) or with Gigabite r9 380X(970Mhz)
well I like Nvidia but have seen that R9 380x gives little more FPS in most games, and it has 256bit bus. but Nvidia has just 128bit bus.
but I'm afraid of AMD's heating problems.in westbengal(India) it's now near 40 degree C and humidity is over 80% so heating is a great problem.
and if I go with Nvidia...should I go with 2gb or 4GB ??
 


I have ASUS gtx 960 strix 2gb. I am in Pakistan so temps are pretty much same. It performs well at 1080p in new high end games and my temps stay below 65degrees. Max would be 70.
 



Just wanted to add that the Haswell architecture for the GTX 960 is a bit different (more efficient) using a 128 bit bus than in older GTX cards. See this Tom's Hardware thread about that here: http://www.tomshardware.com/answers/id-2498323/gtx-960-128bit-gtx-760-256bit.html

Those debating about whether to go with the 2GB or 4GB version should decide based on whether they want the extra RAM for "cleaner" looking game play in those games that might need more than 2GB at times. I have the 4GB card and would still buy that card again, given the choice, but one should realize that if they are looking for greater frame rates in games, they are unlikely to see them with more RAM running at 1080p. There might be a difference at 1440p, however, but that is beyond my experience at the moment.
 


Haha wth no GTX 960 4gb oc white edition from msi can run almost every AAA title with AA to the max and it's a 128-bit lol and you get good fps soooooooo you're wrong...