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Sizing 'em up
Take some clock speed information and some other numbers about per-clock capacity from the latest crop of high-end graphics cards, and you get this neat table:

  Peak pixel
fill rate
(Gpixels/s)
Peak
bilinear
filtering
int8/fp16
(Gtexels/s)
Peak
rasterization
rate
(Gtris/s)
Peak
shader
arithmetic
rate
(tflops)
Memory
bandwidth
(GB/s)
Radeon R9 290X 64 176/88 4.0 5.6 320
Radeon R9 Fury 64 224/112 4.0 7.2 512
Radeon R9 Fury X 67 269/134 4.2 8.6 512
GeForce GTX 780 Ti 37 223/223 4.6 5.3 336
Gigabyte GTX 980 85 170/170 5.3 5.4 224
MSI GeForce GTX 980 Ti 108 216/216 7.4 6.9 336
GeForce Titan X 103 206/206 6.5 6.6 336
MSI GeForce GTX 1070 117 220/220 5.5 7.0 259
GeForce GTX 1080 111 277/277 6.9 8.9 320

In the custom-card form we're looking at today, the GTX 1070 delivers on its promise of beating out the Titan X in many regards, at least on paper. Its peak pixel fill rate even exceeds that of the GTX 1080 Founders Edition. Since it's down a GPC—and therefore a raster unit—compared to the GTX 1080, however, the GTX 1070 can't move as many triangles as its bigger brother, and it also falls short of the much larger GM200 chip. Let's see how these numbers translate to performance in our directed Beyond3D benchmark suite.

Despite its peak numbers in the table above, the GTX 1070 falls slightly behind the GTX 980 Ti in our directed pixel-fill benchmark. This may be one of the areas where being down a GPC on the GTX 1080 hurts the 1070 a bit.

Since the GTX 980 Ti and the GTX 1070 both rely on GDDR5 memory, it's easy to make cross-generational comparisons here. The GTX 1070's higher-clocked GDDR5 and color-compression mojo can't make up for the fact that its bus width is significantly narrower than that of the GM200 chip on board the 980 Ti.

The GTX 1070 ekes out a win over the GTX 980 Ti in our texturing tests, thanks to its prodigious clock speeds.

Despite its theoretical disadvantage in polygon throughput, the GTX 1070 can also move considerably more triangles than the GTX 980 Ti.

The GTX 1070 lives up to its number-crunching potential in our directed ALU tests, although the GTX 980 Ti isn't far behind. It's impressive that the GTX 1070 can deliver this kind of performance despite being down 896 stream processors on the GTX 980 Ti. Now that we've teased out the differences that disabling a GPC on GP104 makes, let's run the GTX 1070 through some real-world tests.