The 2GB Question & The Test
The 2GB Question & The Test
Before diving into our test results, I wanted to spend a moment mulling over NVIDIA’s choice for the default memory configuration on GTX 770. Due to the use of a 256bit bus on GK104, NVIDIA limits their practical memory choices to either 2GB of RAM or 4GB. A year ago this was fine even if it wasn’t as large as AMD’s 3GB memory pool, but that was after all a year ago.
Not unlike where we are with 1GB/2GB on mainstream ($150+) cards, we’re at a similar precipice with these enthusiast class cards. Having 2GB of RAM doesn’t impose any real problems today, but I’m left to wonder for how much longer that’s going to be true. The wildcard in all of this will be the next-generation consoles, each of which packs 8GB of RAM, which is quite a lot of RAM for video operations even after everything else is accounted for. With most PC games being ports of console games, there’s a decent risk of 2GB cards being undersized when used with high resolutions and the highest quality art assets. The worst case scenario is only that these highest quality assets may not be usable at playable performance, but considering the high performance of every other aspect of GTX 770 that would be a distinct and unfortunate bottleneck.
The solution for better or worse is doubling the GTX 770 to 4GB. GTX 770 is capable of housing 4GB, and NVIDIA’s partners will be selling 4GB cards in the near future, so 4GB cards will at least be an option. The price premium for 4GB of RAM looks to be around $20-$30, and I expect that will come down some as 4Gb chips start to replace 2Gb chips. 4GB would certainly make the GTX 770 future-proof in that respect, and I suspect it’s a good idea for anyone on a long upgrade cycle, but as always this is a bit of a gamble.
Though I can’t help but feel NVIDIA could have simply sidestepped the whole issue by making 4GB the default, rather than an optional upgrade. As it stands 2GB feels shortsighted, and for a $400 card, a bit small. Given the low cost of additional RAM, a 4GB baseline likely would have been bearable.
The Test
For today’s launch article we’re using NVIDIA’s 320.18 drivers for the GTX 780 and GTX 770, , and AMD’s Catalyst 13.5b2 drivers for all AMD cards.
| CPU: | Intel Core i7-3960X @ 4.3GHz |
| Motherboard: | EVGA X79 SLI |
| Power Supply: | Antec True Power Quattro 1200 |
| Hard Disk: | Samsung 470 (256GB) |
| Memory: | G.Skill Ripjaws DDR3-1867 4 x 4GB (8-10-9-26) |
| Case: | Thermaltake Spedo Advance |
| Monitor: | Samsung 305T |
| Video Cards: | AMD Radeon HD 7970 GHz Edition AMD Radeon HD 7990 NVIDIA GeForce GTX 580 NVIDIA GeForce GTX 680 NVIDIA GeForce GTX 690 NVIDIA GeForce GTX 780 NVIDIA GeForce GTX Titan |
| Video Drivers: | NVIDIA ForceWare 320.14 NVIDIA ForceWare 320.18 AMD Catalyst 13.5 Beta 2 |
| OS: | Windows 8 Pro |
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