ATI Radeon HD 4770
RV740
Graphics Processor
640
Cores
32
TMUs
16
ROPs
512 MB
Memory Size
GDDR5
Memory Type
128 bit
Bus Width
Recommended Resolutions:
- 640x480
- 1280x720
- 1366x768
- 1600x900
- 1920x1080
- 2560x1440
- 3840x2160
The Radeon HD 4770 was a mid-range graphics card by ATI, launched in April 2009. Built on the 40 nm process, and based on the RV740 graphics processor, in its RV740 XT variant, the card supports DirectX 10.1. The RV740 graphics processor is an average sized chip with a die area of 137 mm² and 826 million transistors. It features 640 shading units, 32 texture mapping units and 16 ROPs. ATI has placed 512 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 750 MHz, memory is running at 800 MHz.
Being a dual-slot card, the ATI Radeon HD 4770 draws power from 1x 6-pin power connectors, with power draw rated at 80 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4770 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 203 mm in length, and features a dual-slot cooling solution. Its price at launch was 109 US Dollars.
Being a dual-slot card, the ATI Radeon HD 4770 draws power from 1x 6-pin power connectors, with power draw rated at 80 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4770 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 203 mm in length, and features a dual-slot cooling solution. Its price at launch was 109 US Dollars.
Graphics Processor
- GPU Name
- RV740
- GPU Variant
-
RV740 XT
(215-0727019)
- Architecture
- TeraScale
- Process Size
- 40 nm
- Transistors
- 826 million
- Die Size
- 137 mm²
Graphics Card
- Release Date
- Apr 28th, 2009
- Generation
- Radeon R700 HD 4700
- Production Status
- End-of-life
- Launch Price
- 109 USD
- Bus Interface
- PCIe 2.0 x16
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080
Clock Speeds
- GPU Clock
- 750 MHz
- Memory Clock
-
800 MHz
3200 MHz effective
Memory
- Memory Size
- 512 MB
- Memory Type
- GDDR5
- Memory Bus
- 128 bit
- Bandwidth
- 51.20 GB/s
Render Config
- Shading Units
- 640
- TMUs
- 32
- ROPs
- 16
- Compute Units
- 8
Theoretical Performance
- Pixel Rate
- 12.00 GPixel/s
- Texture Rate
- 24.00 GTexel/s
- FP32 (float) performance
- 960.0 GFLOPS
- FP64 (double) performance
- 192.0 GFLOPS (1:5)
Board Design
- Slot Width
- Dual-slot
- Length
- 8 inches
203 mm
- TDP
- 80 W
- Outputs
- 2x DVI
1x S-Video
- Power Connectors
- 1x 6-pin
- Board Number
- B743
Graphics Features
- DirectX
- 10.1
- OpenGL
- 3.3
- OpenCL
- 1.1
- Vulkan
- N/A
- Shader Model
- 4.1
RV740 GPU Notes
| Graphics/Compute: GFX3 Display Core Engine: 3.2 Unified Video Decoder: 2.2 |
Retail boards based on this design (1)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| ASUS HD 4770 Formula | 750 MHz | 800 MHz | Single-slot, 1x DVI 1x HDMI 1x VGA |