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AMD Radeon HD 7700 review

Soon after the emergence of HD 7970 XT Tahiti in late December 2011 and also his brother HD 7950 Pro Tahiti on January 31 yesterday, AMD seems to not want to miss the moment to dominate the graphics card is just like that. From the information developed, AMD will release their latest graphics cards based on the fabrication of 28 nm for the mainstream middle class this February. Graphics card that will have a codename Cape Verde with a series of HD 7770 and HD 7750 will be placed to replace its predecessor, Juniper XT (HD 5700/6700 series). Here are the specifications of the graphics card we got from a German website:
AMD Cape Verde



  •     Built on TSMC's 28 nm process, ~ 1.5 billion transistors
  •     10 Graphics CoreNext Compute Units (CUS)
  •     640 stream processors
  •     40 TMUs, 16 ROPs
  •     128-bit wide GDDR5 memory interface


AMD Radeon HD 7770

  •     All CUS enabled, 640 stream processors
  •     1 GB of GDDR5 memory
  •     40 TMUs, 16 ROPs
  •     1000-MHz core clock speed
  •     1125 MHz (actual), 4500 MHz (effective) memory clock-speed
  •     72 GB / s memory bandwidth
  •     1280 GFLOP / s single-precision floating-point performance
  •     Typical board power: 80W


AMD Radeon HD 7750


  •     8 cus enabled, 512 stream processors
  •     1 GB of GDDR5 memory
  •     32 TMUs, 16 ROPs
  •     800 MHz core clock-speed
  •     1125 MHz (actual), 4500 MHz (effective) memory clock-speed
  •     72 GB / s memory bandwidth
  •     819 GFLOP / s single-precision floating-point performance
  •     Typical board power: 55W


Unlike the Juniper XT using VLIW5 features 800 stream processors with a total of SP, this graphics card uses AMD Cape Verde GCN features (Graphics CoreNext) with a total of 640 SP. Although the quantity of Juniper XT has a number of shader more than Cape Verde, both theoretically this graphics card has a "raw power" are equivalent because both have different algorithms. However, AMD has a strategy to get better performance by giving the Core Clock speed is very high by default which is a 1GHz! This high rate can be achieved thanks to the use and fabrication of 28 nm is the highest ever record clock is used as the default specification / reference (non-OC) of a VGA.

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