So I am building a 770 SLI rig. I am about to buy the first card. I'll buy the second one around Christmas. I plan on using this rig for about 4 years. With the new consoles and their considerably high RAM capacities, I'd expect games that require more VRAM to start coming out in a year or so. I was wondering if 2gb of RAM will be a bottleneck on an SLI build in a few years. Can I expect to make use of 2+ GB per card or is 4gb per card overkill? Thank for any advice. If anyone has access to benchmarks that can show one case or the other, that you be extra helpful.
GTX 770 SLI 4GB vs 2GB
- Thread starter aymanhaq
- Start date
- Jun 19, 2011
- 33,484
- 1,615
- 159,590
OP, this is my exact dilemma. And for bf4. With 1440p, 2gb VRAM might be an issue, according to the alpha benchmarks.
Only one thing people seem to forget...770 is 256-bit so adding 2gb probably wont help at all. The 780 is 384-bit so it can make use of the higher VRAM.
No point adding VRAM if the bit lanes aren't wider to access it. It's like makin a huge parking lot but only letting one car in at a time. No matter how big the lot gets, its bottlenecked by the narrow lane. So far this has been the case with gtx 770 256-bits having 4gb VRAM.
My prediction... Gtx 770 4gb will have no benefit over 2gb in bf4. Gtx WILL due to 384-bit + more. However, just like bf3, the price jump from 770 to 780 isn't justified by the marginal FPS increase.
Only one thing people seem to forget...770 is 256-bit so adding 2gb probably wont help at all. The 780 is 384-bit so it can make use of the higher VRAM.
No point adding VRAM if the bit lanes aren't wider to access it. It's like makin a huge parking lot but only letting one car in at a time. No matter how big the lot gets, its bottlenecked by the narrow lane. So far this has been the case with gtx 770 256-bits having 4gb VRAM.
My prediction... Gtx 770 4gb will have no benefit over 2gb in bf4. Gtx WILL due to 384-bit + more. However, just like bf3, the price jump from 770 to 780 isn't justified by the marginal FPS increase.
The bandwidth is certainly a limitation. Nvidia has somewhat offset it by the 7GHz frequency. The question I was asking myself was not if the card will ever use 4gb, but will it ever need more than 2GB. Since I plan on going SLI and with the added vram on consoles, I predicted that in 1-2 years using more than 2GB is a distinct possibility. I really can't predict how the 224GB/s vs 288GB/s bandwidth will affect the usage though. So I waited a bit longer and sold some old phones to get the extra cash. Got myself a 4GB variant.
I doubt the added vram will contribute much in BF4. I'm predicting it'll start to use the extra vram in 2015 games. I guess it depends on what you want out of your system. I'm trying to build one that I won't have to upgrade for a long time. That's why I got the 4GB.
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