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Digital-Daily : Video : leadtek7600gt-extreme

Leadtek PX7600GT Extreme fast and quiet

Leadtek PX7600GT Extreme  fast and quiet
Author: Dmitry Sofronov
Date: 09.07.2006


Much time has passed since the announcement of G73 and emergence of first 7600GT video cards. The cooling system on reference video cards was definitely rejoicing for both the quietness and high performance, so it's no wonder that with time every eminent manufacturer has acquired products that differed from the first samples to the better. Today, we are introducing one of such cards to you.

Leadtek PX7600GT Extreme

Leadtek PX7600GT Extreme

The setting of the package in made in a style customary for Leadtek. The abundance of badges in the bottom part of the box traditionally informs of the key specifications of the video card. There are two points to note - the video card offers a proprietary PCB design and a highly efficient cooling system. In all the other respects, it is similar to modern video cards, so we are not going to dwell at that.

Leadtek PX7600GT Extreme

The reverse side of the package wouldn't be so remarkable (is is normally the case) if it were not for the operating frequencies 590/1600 MHz for GPU/memory shown on it. Evidently, it's just the increased operating frequencies which allowed the developers of the video card to dub it proudly as "Extreme". Because of the efficiency of G73, the requirements to the PSU are rather modest - 300 W if a single video card is used, and 400 W if two video cards in the SLI mode are used. The remaining info is absolutely typical and once again reminds of support for HDTV, DVI, as well as various technologies for improving image quality both in games and watching video.

Package bundle:

  • User's Guide
  • a HDTV-out adapter
  • DVI/D-SUB adapter
  • A drivers CD
  • CD with Cyberlink PowerDVD6 2ch
  • Disk with Serious Sam II
  • Disk with Trackmania Nations

As you can see, the package bundle is quite typical for a mid-end video card. It is nice to see that it includes the game Serious Sam II, so let's hope that won't strongly affect the cost of the video card for end consumers.

Leadtek PX7600GT Extreme

Upon the first glance on Leadtek 7600GT Extreme you can see that the company's engineers have a very thorough job. The massive copper radiator and a huge enough cooler should do a good job cooling the chip and thus provide a low noise level. Interestingly, in the upper left-hand corner we can see a space for the additional power supply connector, although the connector itself is not unsoldered. Perhaps, we are in for future versions having an "official" volt mode and thus reduced power consumption?

Leadtek PX7600GT Extreme

The reverse side of the PCB is abundant with fine components and nothing more. The space for a video capture chip is provided, although the chip itself is not installed. As you can see, the PCB differs from the reference, but the memory chips on the reverse side are still missing.

Leadtek PX7600GT Extreme

The design of the cooler is hiding a small surprise in itself. Apart from the rather thick base made of a copper-bearing alloy, inside the base there is a heat pipe, which should favor a good efficiency of heat spreading from the GPU. Why from the GPU only? Because the radiator does not touch the memory chips. We'll find it later whether it is good or not once we get round to overclocking and benchmarking. The noise from the turbines does not make annoy the ear and is felt only on the computer power-on. Unfortunately, it is hard to tell the rotational speed of the turbine since the cooler is connected via a two-wire scheme and the integrated tachometer (if available) is not enabled. To prevent chipping of the GPU core, there are rubber poles over the edges of the radiator foot.

Leadtek PX7600GT Extreme

On removing the cooler, we can see again that engineers at Leadtek have developed own PCB for PX7600GT Extreme. The power supply system as well as positioning of the video memory chips have undergone changes.

Leadtek PX7600GT Extreme

The video processor does not make any difference from its numerous brethren. The only exception is that the operating frequency, as was stated above, amounts to 590 MHz, instead of 560 MHz which is common for a typical 7600GT. Interestingly, if you take Leadtek 7600GT Extreme and run a utility that indicates its operating frequencies, you will be surprised to see that the GPU frequency equals . 560 MHz! There is no deception about that. Indeed, in the 2D mode the GPU frequency amounts to 560 MHz and can be raised to 590 MHz on launching any 3D application. That does make sense. What's the point of heating up the VPU in 2D mode to make extra noise?

Leadtek PX7600GT Extreme

Another surprise from Leadtek 7600GT Extreme. It uses video memory of 1.25 ns access time, which is equivalent to 1600 MHz DDR. This is just the frequency the video memory runs and without any radiators. As compared to 1400 MHz in typical 7600GT, the boost is quite substantial, and Samsung memory normally overclocks well. The tests will tell if we can make use of the capability. The overall capacity of the video memory amounts to 256 MB, with the 128-bit memory bus.


  • Introducing Leadtek7600GT-Extreme.
  • Benchmarking. Final Words.

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