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Sapphire Radeon HD 4770 CrossFireX Performance E-mail
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Written by Olin Coles   
Friday, 08 May 2009
Table of Contents: Page Index
Sapphire Radeon HD 4770 CrossFireX Performance
Radeon HD 4770 Features
RV740 GPU Specifications
Radeon 4770 Closer Look
Video Card Testing Methodology
3DMark06 Benchmarks
COD 4 Fraps Benchmarks
Crysis Benchmark Results
Devil May Cry 4 Benchmark
World in Conflict Benchmarks
VGA Power Consumption
Radeon HD 4770 Temperatures
Radeon 4000-Series Final Thoughts
Sapphire 100277L Conclusion

RV740 GPU Specifications

  • Display Output: Dual DL-DVI-I+HDTV
  • RV740 Core Clock: 750 MHz
  • Memory Clock: 800 MHz (1600 MHz DDR)
  • PCI Express 2.0 x16 bus interface
  • 512MB /128-bit GDDR5 memory interface
  • Dual-Slot Active Cooler
  • HDMI compliant via dongle
  • 7.1 Audio Channel Support
  • Microsoft DirectX 10.1 support
  • Shader Model 4.1 support
  • 0.96 TFLOPs Computer Power
  • 54.4 GBps Memory Bandwidth
  • Product

    Radeon HD 4770

    Radeon HD 4850

    Radeon HD 4870

    Radeon HD 4890

    VPU Clock

    750 MHz

    625 MHz

    750 MHz

    850 MHz

    Die Process

    40nm

    55nm

    55nm

    55nm

    GPU Transistors

    826M

    956M

    956M

    959M

    Compute Power

    960 GFLOPs

    1.0 TFLOPs

    1.2 TFLOPs

    1.36 TFLOPs

    Texture Units

    32

    40

    40

    40

    Texture Fillrate

    24.0 GTexels/s

    25.0 GTexels/s

    30.0 GTexels/s

    34.0 GTexels/s

    Memory Size

    512 MB

    512 MB

    512/1024 MB

    1024 MB

    Memory Data Width

    128-bit

    256-bit

    256-bit

    256-bit

    Memory Type

    GDDR5

    GDDR3

    GDDR5

    GDDR5

    Memory Speed (MHz)

    800 (3.2 GBps)

    993 (2.0 GBps)

    900 (3.6 Gbps)

    975 (3.9 Gbps)

    ROPs

    16

    16

    16

    16

    Pixel Fillrate

    12.0 GPixels/s

    10.0 GPixels/s

    12.0 GPixels/s

    13.6 GPixels/s

    Thermal Solution

    Dual Slot Fan

    Single Slot Fan

    Dual Slot Fan

    Dual Slot Fan

    BUS Type

    PCI-E x 16, 2.0

    PCI-E x 16, 2.0

    PCI-E x 16, 2.0

    PCI-E x 16, 2.0

    DirectX 10 / Shader Model 4.1

    Yes

    Yes

    Yes

    Yes

    VGA Output

    Yes, by dongle

    Yes, by dongle

    Yes, by dongle

    Yes, by dongle

    DL-DVI-I

    x 2

    x 2

    x 2

    x 2

    HDMI

    Yes, by dongle

    Yes, by dongle

    Yes, by dongle

    Yes, by dongle

    H.264 / VC-1 Acceleration

    Yes

    Yes

    Yes

    Yes

    7.1 Audio Support

    Yes

    Yes

    Yes

    Yes

    HDCP Support

    Yes

    Yes

    Yes

    Yes

    HDTV Out

    Yes

    Yes

    Yes

    Yes

    Form Factor

    ATX

    ATX

    ATX

    ATX



     

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