NVIDIA GeForce FX 5900 Ultra
This is the GeForce FX 5950 Ultra’s precursor in the top-end graphics card sector. I am speaking about those times when such cards were the fastest offers from NVIDIA, of course. The GeForce FX 5900 Ultra doesn’t differ from the 5950 Ultra architecturally. In fact, the latter GPU is an “officially overclocked” version of the 5900 Ultra.
I took a reference GeForce FX 5900 Ultra board from NVIDIA for my tests:
This graphics card features the GeForce FX 5900 Ultra GPU and comes equipped with 256MB of DDR SDRAM. The nominal clock rates of the card in the 3D mode are 450/850MHz. The overclockability of my sample was laughable: 455/880MHz.
Power consumption results:
The GeForce FX 5900 Ultra quite naturally consumes less power than the GeForce FX 5950 Ultra, because it works at lower frequencies and has a smaller GPU voltage in the 3D mode – the driver sets the voltage to 1.2/1.4v for 2D/3D modes, respectively. The real voltages on the outputs of the GPU voltage regulator on my sample were 1.235/1.449v.
The GeForce FX 5900 Ultra differs from the FX 5950 Ultra in the specifics of its power consumption:
Like GeForce 6 series graphics cards, the GeForce FX 5900 Ultra receives most of its power supply from the +12v line that goes through the additional power connector.