Many new 'potentially-disruptive' display techs have graced the market and faded away into irrelevance; now its 4K UHD's turn to try its hand at the same. Out of all that have come so far, I would have placed my bet upon 3D Stereoscopic as the ultimate GPU bending fad to follow, but it sadly shrunk to a niche following and proved that I shouldn't ever gamble. Thanks to this new '4k' trend, Firestrike Ultra has been revealed as the first benchmark to test the UHD capability of GPUs .
Firestrike Ultra Revealed - World's First Synthetic Benchmark for 4K Resolution
I have a little trouble calling this the first 4k benchmark because it is relatively easy to force benchmarks to run on a resolution other than native. However, to be fair to Futuremark, this is probably the only one designed to fully test the limitations of Ultra HD (though it contains no new scenes). On the off chance that you have logged on to the Internet after half a decade and don't know what 4K or Ultra HD is, allow me to explain. Basically the resolution of 3840x2160 is known as UHD (Ultra HD), 2160p or 4K. Whatever takes your fancy.
"Can your PC handle the world's first 4K gaming benchmark? Fire Strike Ultra's 4K UHD rendering resolution is four times larger than the 1080p resolution used in Fire Strike.
A 4K monitor is not required, but your graphics card must have at least 3GB of memory to run this monstrously demanding benchmark."
"The world's first 4K gaming benchmark"
"Renders at 4K UHD resolution (3840 x 2160)"
"The most demanding 3DMark test ever."
The problem with this resolution is that it literally has 4 times the amount of pixels that 1080p has. A GPU will have a load worth 400% its usual one (assuming you run 1080p), not to mention the various bandwidth and bus bottlenecks that are incurred at this resolution. It is because of this that a synthetic benchmark to test this resolution was created. Be warned though, however, that even the highest end GPUs such as GTX 980 and R9 290X who find 1080p a walk in the park, will cry for their silicon fabs on 4K Synthetic. The system requirements list that 3GB worth of VRAM is necessary for the benchmark to run.