Introduction
Contents
GeForce 7800 GTX is the latest graphics chip released by NVIDIA and it is the fastest chip provided by this company nowadays. We have already explained in detail how this new chip works and the difference between it and GeForce 6800 series. So read this article if you want to know more about the GeForce 7800 GTX.
Figure 1: XFX GeForce 7800 GTX box.
This chip officially runs at 430 MHz with 256 MB 256-bit GDDR3 memory running at 1.2 GHz, but XFX model chip runs at 450 MHz with memory running at 1.25 GHz.
Note: The model we reviewed is called PV-T70F-UNF7. One month after we posted this review XFX released other models: PV-T70F-UND7, with engine running at 490 MHz and memory at 1.30 GHz, and PVT-T70F-UNDE, also with engine running at 490 MHz and memory at 1.30 GHz, coming with full version of Battlefield 2 game.
You can see in our tutorial “NVIDIA Chips Comparison Table” the difference between this new chip and the other chips from NVIDIA, while on our tutorial “ATI Chips Comparison Table” you can compare it to its competitors from ATI. It is very important to keep in mind that NVIDIA chips from series 6 and 7 use a Shader 3.0 engine (DirectX 9.0c), while ATI chips still use Shader 2.0 (DirectX 9.0).
It is always important to remember that the “memory clock” column from these tables informs the chip manufacturer (ATI or NVIDIA) recommended clock. In some cases, specially on cheaper video cards, the card manufacturer uses simpler memory chips (in order to cut the board price) and lower memory clocks (compatible with the memory chip used), making the board to achieve a lower performance compared to boards that use the same graphics chip but with their memory chips running at the chip manufacturer recommended clock. Because of that, we always run PowerStrip software in order to check if the video card memory is running at the standard clock set by the chip manufacturer or running at a lower clock rate.
The reviewed GeForce 7800 GTX model from XFX runs overclocked, at 450 MHz for the chip and 1.25 GHz for the memory.
This video card is targeted to the PCI Express bus, so in our review we will compare it only to other PCI Express video cards, in special Radeon X850 XT Platinum Edition, which is the fastest ATI chip available today. As far as we know, NVIDIA doesn’t plan to release an AGP version of GeForce 7800 GTX.
The GeForce 7800 GTX model from XFX comes with a free Xgear Dual PC Controller gamepad from XFX, and keeps the USD 599 suggested retail price set by NVIDIA. Really amazing.
This video card also has video capture (VIVO) function. Let’s talk about the XFX model in details.
