The SM-G900R4 US Cellular version of the Galaxy S5 has purportedly made an appearance in the AnTuTu benchmark database in a more or less retail version, seeing that a 1440x2560 pixels display is reported, alongside a 16 MP rear camera.
The processor, however, is the fastest 2.5 GHz Snapdragon 800, not the newest 805, which will be available to enter commercial devices in May or June of this year at the earliest, it seems. The rest of the specs include 3 GB of RAM, 32 GB of internal memory, 2 MP front camera, and Android 4.4.2 on board.
Another version - SM-G900H - appeared in the benchmark database as well, but this one is quite different, carrying a 1080x1920 pixels screen, and a 1.5 GHz octa-core Exynos 5422 processor plus Mali-T628 GPU. This model is rumored to be aimed at the European market predominantly. Besides the different processor and screen resolution, it also carries 2 GB of RAM, instead of 3 GB, and 16 GB of internal memory, instead of 32 GB, like the Quad HD S5. It still sports a 16 MP rear camera, 2 MP frontal, and Android 4.4.2 KitKat.
There remains the question why are the different versions so far apart in terms of hardware, and we aren't talking about the processor - the US LTE landscape kind of presupposes a Qualcomm chipset, instead of Exynos - but 1080p instead of 1440p screen for the rest of the world, less RAM and internal memory? We doubt Europeans will be happy about that, unless one of the versions is an engineering unit for testing with different hardware config than the final retail.
Two purported Galaxy S5 models appear on AnTuTu, with radically different specs