XFX Overclocked GeForce 7900 GT (PV-T71G-UCP7) Review

Overclocked GeForce 7900 GT (PV-T71G-UCP7) from XFX

We removed the video card heatsink to take a look. It is all made of copper, as you can see in Figure 4.

XFX GeForce 7900 GT 550M XTREME 256 MB with VIVO (PV-T71G-UCP7)Figure 4: The video card with its heatsink detached.

As you may have notice in Figure 2, the heatsink doesn’t touch the memory chips, so no cooling solution is provided for them.

This video card has eight GDDR3 256-Mbit 1.4 ns chips from Samsung (K4J55232QG-BC14), making its 256 MB video memory (256 Mbits x 8 = 256 MB). These are the same chips used by NVIDIA’s reference model for GeForce 7900 GT. They can run officially up to 1.4 GHz and on this video card they are overclocked to 1.63 GHz. As a curiosity, the Radeon X1900 GT we reviewed used the same memory chips but with a different speed grade (1.2 ns, BC12).

XFX GeForce 7900 GT 550M XTREME 256 MB with VIVO (PV-T71G-UCP7)Figure 5: Memory chips from Samsung used on this card.

The VIVO (video capture) function of this card is made through Phillips SAA7115HL chip, shown in Figure 6.

XFX GeForce 7900 GT 550M XTREME 256 MB with VIVO (PV-T71G-UCP7)Figure 6: Phillips SAA7115HL chip, in charge of VIVO (video capture) feature.

In Figure 7, you can see GeForce 7900 GT chip. As you can see, it is internally called G71-GT by NVIDIA.

XFX GeForce 7900 GT 550M XTREME 256 MB with VIVO (PV-T71G-UCP7)Figure 7: GeForce 7900 GT chip.

This video card comes with two DVI-to-VGA adapters, two S-Video cables, one VIVO cable and one PCI Express auxiliary power adapter.

Author: Gabriel Torres

Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.

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