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Home > Hardware Reviews > Graphics Cards

Thursday, March 02, 2006

1. Introduction

A couple of months back, CDRinfo released a review investigating the capabilities of the XFX 7800 GT card. The 7800 GT became available after the 7800 GTX, as a more affordable solution for gamers who wanted to get all the benefits of a latest release card, but at a lower cost. In this review, we will be looking at the XFX GeForce 7800 GTX Overclocked with 256MB DDR3.


Chipset GeForce 7800 GTX
Video Memory 256 MB DDR3
Engine Clock 450MHz (Factory Overclock)
Memory Clock 1.25GHz (Factory Overclock)
RAMDAC Dual 400MHz
Bus Standard PCI-E
Memory Interface 256-bit
Memory Bandwidth 40 GB/sec
Fill Rate 10.32 billion pixels/sec
Texels per Second 860 million
Pixels per clock (peak) 24
TV Output Video-in & Video-out (VIVO) with HDTV-out support
Adaptor/Cable bundled 2x S-Video cables
VIVO cable
2x DVI adaptors
power cord
Highlighted Features Dual DVI Out , TV Capture , Factory overclocked the engine clock at 450MHz and memory clock at 1.25GHz (vs. standard 430MHz and 1.2GHz) , Dual VGA , SLI ready , HDTV ready

More specifically, we will be testing the XFX 7800 GTX (450/1.25) EditionVGA card. This is one of the highest stock overclocked 7800GTX cards you can find on the market. But there is also an XFX GeForce 7800 GTX version, which is stock overclocked at 490MHz Engine clock and 1.3GHz Memory clock.

- Features

NVIDIA® SLI™ Technology

Delivers up to 2x the performance of a single GPU configuration for unparalleled gaming experiences by allowing two graphics cards to run in parallel. The must-have feature for performance PCI Express graphics, SLI dramatically scales performance on over 60 top PC games.

NVIDIA® PureVideo™ Technology

The combination of high-definition video processors and NVIDIA DVD decoder software delivers unprecedented picture clarity, smooth video, accurate color, and precise image scaling for all video content to turn your PC into a high-end home theater. (Feature requires supported video software.)

PCI Express™ Support

Designed to run perfectly with the next-generation PCI Express bus architecture. This new bus doubles the bandwidth of AGP 8X delivering over 4 GB/sec. in both upstream and downstream data transfers.

NVIDIA® UltraShadow™ II Technology
Enhances the performance of bleeding-edge games, like id Software's Doom 3, that feature complex scenes with multiple light sources and objects.

128-bit Studio-Precision Computation
128-bit studio-precision computation through the entire pipeline prevents image defects due to low precision and ensures the best image quality for even the most demanding applications.

256-bit Memory Interface

Delivers more memory bandwidth and efficiency to power the latest games and applications at blazing speeds.

64-bit Floating Point Texture Filtering and Blending

Based on the OpenEXR technology from Industrial Light & Magic (, NVIDIA's 64-bit texture implementation delivers state-of-the-art high dynamic-range (HDR) visual effects through floating point capabilities in shading, filtering, texturing, and blending.

Adaptable Programmable Video Processor

PureVideo's programmable technology adapts to new video encoding formats as they are developed to provide a future-proof video solution. (Feature requires supported video software.)

Advanced Motion Adaptive De-interlacing

Smoothes video and DVD playback on progressive displays to deliver a crisp, clear picture that rivals high-end home theater systems. (Feature requires supported video software.)

Dual 400MHz RAMDACs

Blazing-fast RAMDACs support dual QXGA displays with ultra-high, ergonomic refresh rates--up to 2048x1536@85Hz.

Dual DVI Support

Able to drive the industry's largest and highest resolution flat-panel displays.

High-definition MPEG-2 and WMV Hardware Acceleration
Smoothly playback all MPEG-2 and WMV video--including WMV-HD--with minimal CPU usage so the PC is free to do other work.

Integrated HDTV Encoder

Provides world-class TV-out functionality up to 1080i resolution.

Microsoft® DirectX® 9.0 Shader Model 3.0 Support

Ensures top-notch compatibility and performance for all DirectX® 9 applications, including Shader Model 3.0 titles.

Next-generation Superscalar GPU Architecture

Delivers up to 2x the shading power of previous generation products taking gaming performance to extreme levels.

NVIDIA® CineFX™ 4.0 Engine

Delivers advanced visual effects at unimaginable speeds. Full support for Microsoft® DirectX® 9.0 Shader Model 3.0 enables stunning and complex special effects. Next-generation shader architecture with new texture unit design streamlines texture processing for faster and smoother gameplay.

NVIDIA® Digital Vibrance Control™ (DVC) 3.0 Technology

Allows the user to adjust color controls digitally to compensate for the lighting conditions of their workspace, in order to achieve accurate, bright colors in all conditions.

NVIDIA® ForceWare™ Unified Driver Architecture (UDA)

Delivers a proven record of compatibility, reliability, and stability with the widest range of games and applications. ForceWare ensures the best out-of-box experience for every user and delivers continuous performance and feature updates over the life of NVIDIA GeForce GPUs. Includes full support for PCI Express and AGP.

NVIDIA® Intellisample™ 4.0 Technology

The industry's fastest antialiasing delivers ultra-realistic visuals, with no jagged edges, at lightning-fast speeds. Visual quality is taken to new heights through a new rotated grid sampling pattern, advanced 128 Tap sample coverage, 16x anisotropic filtering, and support for transparent supersampling and multisampling.

OpenGL™ 2.0 Optimizations and Support

Ensures top-notch compatibility and performance for all OpenGL applications. NVIDIA® nView® Multi-display Advanced technology provides the ultimate in viewing flexibility and control for multiple monitors.

Video Color Correction

Color temperature correction makes actors' faces appear natural, rather than washed out and pale, when playing videos on LCD and CRT displays. Display gamma correction ensures videos are not too dark, overly bright, or washed out regardless of the video format or display. (Feature requires supported video software.)

Video Scaling and Filtering

High-quality scaling and filtering technology delivers a clear, clean image at any window size, including full-screen HDTV resolutions up to 1080i.

- Packaging/Bundle

As usual, the XFX retail box is 'X' shaped and includes all the required material. A multi-language installation guide, a user's manual, cables, drivers disc and of course, games :-)

- FarCry
- X2 The Threat
- Moto GP 2


The cables included in the box:

2 S-Video cables VIVO cable

Power cord 2 DVI-CRT converters

On the rear of the box, you will find the serial number and the card's fan cover.

Now that we have covered the card's specifications and features, let's move on to the next page and have a closer look...

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