Radeon HD 4770 

Released April, 2009
  • 750 MHz
  • 512 MB GDDR5

There is nothing spectacular with the core overclock, it still allows for some fast and easy performance gains.
by techPowerUp! (Apr, 2009)
Huge memory overclocking potential.
by techPowerUp! (Apr, 2009)

Benchmarks Real world tests of the Radeon HD 4770

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Radeon HD 4770

Cloud Gate Factor Data courtesy FutureMark

Radeon HD 4770

Reviews Word on the street for the Radeon HD 4770

The new memory standard made its debut with the AMD Radeon HD 4870, where despite its high bandwidth on offer, it left some room for doubts on how much of a leap it really was, in comparison to GDDR3, given that it offers almost twice the bandwidth.

What People Are Saying Give it to me straight


Since RV740 comes only with a 128-bit memory bus interface, GDDR5 can show huge improvements because it effectively doubles the memory bandwidth.
by techPowerUp! (Apr, 2009)
In theory, GDDR5 offers twice the amount of bandwidth in comparison to GDDR3 at any given configuration.
by techPowerUp! (Apr, 2009)
AIBs will design custom cards that can be cheaper or more expensive depending on the feature set like cooling, clocks, bundle and memory size.
by techPowerUp! (Apr, 2009)


It offers the the highest performance in its class, at a fair price.
by techPowerUp! (Apr, 2009)
I am sure AIBs will also look at alternative coolers to use on this card to either improve performance, acoustics or reduce the price.
by techPowerUp! (Apr, 2009)
Rather than focusing on a small volume in high-end graphics, AMD has realized that a lot of people want cheap, affordable graphics that still can play most games out today.
by techPowerUp! (Apr, 2009)

Memory Type

This card marks the mainstream entry of GDDR5 memory.
by techPowerUp! (Apr, 2009)
For example we are seeing GDDR5 memory on the card.
by techPowerUp! (Apr, 2009)
I am surprised that AMD has not fixed this problem in their second GDDR5-capable GPU.
by techPowerUp! (Apr, 2009)


A single six pin PCI-Express power connector is required to supply additional power to the graphics card.
by techPowerUp! (Apr, 2009)
CUDA/PhysX. Although I didn't expect miracles out of AMD's move to the 40 nm process as far as power consumptions went, I am moderately satisfied with this card's power consumption figures.
by techPowerUp! (Apr, 2009)
In idle the power consumption is not very impressive, I had much higher (in that case lower) hopes for a midrange 40 nm GPU board.
by techPowerUp! (Apr, 2009)


The core overclock is typical of what I expect from AMD, I have no complaints, especially looking at the performance you could expect from overclocking this card.
by techPowerUp! (Apr, 2009)
The memory overclock is simply stunning.
by techPowerUp! (Apr, 2009)
The memory on this card further leaves you massive overclocking headroom.
by techPowerUp! (Apr, 2009)

Specifications Full list of technical specs


GPU brand ATI
GPU name RV740
Market Desktop
Clock speed 750 MHz
Is dual GPU No
Reference card None

raw performance

Shading units 640
Texture mapping units 32
Render output processors 16
Compute units 8
Pixel rate 12 GPixel/s
Texture rate 24 GTexel/s
Floating-point performance 960 GFLOPS


Memory clock speed 800 MHz
Effective memory clock speed 3,200 MHz
Memory bus 128 bit
Memory 512 MB
Memory type GDDR5
Memory bandwidth 51.2 GB/s

noise and power

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