| Sapphire Radeon HD 4770 CrossFireX Performance |
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Reviews -
Featured Reviews: Video Cards
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| Written by Olin Coles |
| Friday, 08 May 2009 |
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Page 3 of 14
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
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Product
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Radeon HD 4770
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Radeon HD 4850
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Radeon HD 4870
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Radeon HD 4890
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|
VPU Clock
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750 MHz
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625 MHz
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750 MHz
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850 MHz
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Die Process
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40nm
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55nm
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55nm
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55nm
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GPU Transistors
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826M
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956M
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956M
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959M
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Compute Power
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960 GFLOPs
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1.0 TFLOPs
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1.2 TFLOPs
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1.36 TFLOPs
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Texture Units
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32
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40
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40
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40
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Texture Fillrate
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24.0 GTexels/s
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25.0 GTexels/s
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30.0 GTexels/s
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34.0 GTexels/s
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Memory Size
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512 MB
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512 MB
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512/1024 MB
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1024 MB
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Memory Data Width
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128-bit
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256-bit
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256-bit
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256-bit
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Memory Type
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GDDR5
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GDDR3
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GDDR5
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GDDR5
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Memory Speed (MHz)
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800 (3.2 GBps)
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993 (2.0 GBps)
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900 (3.6 Gbps)
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975 (3.9 Gbps)
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ROPs
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16
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16
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16
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16
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Pixel Fillrate
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12.0 GPixels/s
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10.0 GPixels/s
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12.0 GPixels/s
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13.6 GPixels/s
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Thermal Solution
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Dual Slot Fan
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Single Slot Fan
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Dual Slot Fan
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Dual Slot Fan
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BUS Type
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PCI-E x 16, 2.0
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PCI-E x 16, 2.0
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PCI-E x 16, 2.0
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PCI-E x 16, 2.0
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DirectX 10 / Shader Model 4.1
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Yes
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Yes
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Yes
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Yes
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VGA Output
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Yes, by dongle
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Yes, by dongle
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Yes, by dongle
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Yes, by dongle
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DL-DVI-I
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x 2
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x 2
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x 2
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x 2
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HDMI
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Yes, by dongle
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Yes, by dongle
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Yes, by dongle
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Yes, by dongle
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H.264 / VC-1 Acceleration
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Yes
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Yes
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Yes
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Yes
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7.1 Audio Support
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Yes
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Yes
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Yes
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Yes
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HDCP Support
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Yes
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Yes
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Yes
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Yes
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HDTV Out
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Yes
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Yes
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Yes
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Yes
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Form Factor
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ATX
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ATX
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ATX
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ATX
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