Hardware Secrets

Home | Camera | Case | CE | Cooling | CPU | Input | Memory | Mobile | Motherboard | Networking | Power | Storage | Video | Other
First Look
Gabriel’s Blog
Main Menu
About Us
Awarded Products
Manufacturer Finder
On The Web
RSS Feed
Test Your Skills
Subscribe today!
Build Your Own PC Do-It-Yourself For Dummies
Build Your Own PC Do-It-Yourself For Dummies, by Mark L. Chambers (For Dummies), starting at $8.34

Home » Video
AMD Radeon HD 6790 Video Card Review
Author: Gabriel Torres
Type: Reviews Last Updated: April 4, 2011
Page: 3 of 12
The AMD Radeon HD 6790 (Cont’d)

In Figure 4, you can see the video card with its cooler removed and, in Figure 5, a close-up of the voltage regulator circuit.

AMD Radeon HD 6790 reference model
click to enlarge
Figure 4: Video card with the cooler removed

The voltage regulator circuit of the reference model uses solid capacitors, ferrite-core coils (which make the regulator to have higher efficiency because they have lower energy loss than iron-core coils), and low RDS(on) MOSFET transistors (i.e., higher efficiency). This circuit uses a four-phase design to generate the GPU voltage.

AMD Radeon HD 6790 reference model
click to enlarge
Figure 5: Voltage regulator circuit

The GPU heatsink can be seen in Figures 6 and 7. It has a copper base, three copper heatpipes (two five-mm and one eight-mm), aluminum fins, and a 75 mm radial fan.

AMD Radeon HD 6790 reference model
click to enlarge
Figure 6: The GPU heatsink

AMD Radeon HD 6790 reference model
click to enlarge
Figure 7: The GPU heatsink

The Radeon HD 6790 reference model uses eight 1 Gbit GDDR5 memory chips, making its 1 GB memory (1 Gbit x 8 = 1 GB). The chips used are H5GQ1H24AFR-T2C parts from Hynix, which support up to 1.25 GHz (5 GHz QDR). Since on this video card memory is accessed at 1 GHz (4 GHz QDR), there is still a huge 25% margin for you to increase the memory clock rate while keeping the chips inside the maximum they support. Of course you can always try to overclock the memory chips above their specs.

AMD Radeon HD 6790 reference model
click to enlarge
Figure 8: Memory chips

Before seeing the performance results, let’s recap the main features of this video card.

« Previous |  Page 3 of 12  | Next »
Print Version | Send to Friend | Bookmark Article | Comments (3)

Related Content
  • NVIDIA GeForce Chips Comparison Table
  • MSI N550GTX-Ti Cyclone OC Video Card Review
  • AMD Radeon HD 6570 512 MB Video Card Review
  • GeForce GT 440 512 MB GDDR5 vs. 1 GB DDR3 Video Card Review
  • Zotac GeForce GTX 560 Multiview Video Card Review

  • RSSLatest News
    LUXA2 Releases New P1-PRO Battery Power Pack
    October 1, 2013 - 7:23 AM PST
    MSI unveils GP70 and GP60 Laptops
    September 30, 2013 - 7:23 AM PST
    AMD Unveils Next-Generation Radeon Graphics Cards
    September 27, 2013 - 5:33 AM PST
    Genius Introduces Energy Mouse in North America
    September 27, 2013 - 5:32 AM PST
    Apple Updates iMac
    September 25, 2013 - 5:27 AM PST
    .:: More News ::.

    © 2004-13, Hardware Secrets, LLC. All rights reserved.
    Advertising | Legal Information | Privacy Policy
    All times are Pacific Standard Time (PST, GMT -08:00)