The V7700 Deluxe 64MB's 64MB of 333MHz DDR SGRAM provides plenty of memory bandwidth, about 5.3GBps, and a ridiculous amount of room for textures. Most of today's games can get by just fine with 16MB, and since the GeForce2 GTS uses texture compression, 32MB is usually more than enough. The only case where the extra 32MB of the 64MB card come in handy is when you run at 1600x1200. At that resolution, the 32MB often runs out of room and takes an AGP texturing performance hit. In that case, the 64MB really helps, but does not get you over the fill rate limitations of 333MHz memory. For those that demand 1600x1200 at high frame rates, a GeForce2 Ultra, with its faster core clock and DDR SGRAM, is the only thing we know of that will be available soon and will provide great performance at 1600x1200 in the newest games. Of course, a GeForce2 Ultra will cost at least $120 more and won't come with video digitizing.
The physical difference between the 32MB and 64MB V7700 Deluxe design appears to be limited to the type of memory chosen. The 32MB version uses eight 32Mbit Infineon memory devices, while the 64MB version uses eight 64Mbit Samsung devices. Otherwise, there are no obvious differences in the PCB or components.
The V7700 Deluxe 64MB card uses a funky circular fan with side exhaust ports to keep the GeForce2 GTS GPU cool. Well, it looks spiffy, so we have no complaints, and it does a perfectly fine job of preventing overheating. As for all the extra video digitizing components, they have no heat sinks or fans and we saw no problems with them overheating.