ATi RV770 GPU - Specifications, and Pictures

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ATi RV770

Capabilities

Manufacturer:	ATi
Series:	Radeon HD 4k
Maximum Framebuffer:	MB
Interface:	PCI-E 2.0 x16
Supported Memory Types:	GDDR3, GDDR4
Memory Bus Type:	64x4 (256 bit)
DirectX Compliance:	10.1
OpenGL Compliance:	2.1
PS Version:	4.1
VS Version:	4.1
Fragment Pipelines:	800
Texture Units:	40
Raster Operators	16
Vertex Pipelines:	0

Manufacturing Details

Transistors:	956 million
Process:	55 nm
Fabricator:

Reference Images

Anti-Aliasing Modes

Texture Filtering Modes

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4 Cards Based On This GPU

Radeon HD 4870
Core Clock: 750 MHz
Mem Clock: 1800 MHz
Pipeline Config: 800/16/40/0

Radeon HD 4870 X2
Core Clock: 750 MHz
Mem Clock: 1800 MHz
Pipeline Config: 800/16/40/0

Radeon HD 4850
Core Clock: 625 MHz
Mem Clock: 993 MHz
Pipeline Config: 800/16/40/0

Radeon HD 4830
Core Clock: 575 MHz
Mem Clock: 900 MHz
Pipeline Config: 640/16/32/0

5 Comments

Thursday, May 15, 2008 6:29:09 PM

-RK
Senior Member

Hay guiz, I'm hearing tales of GDDR5 capability on these...

Tuesday, June 10, 2008 10:18:06 AM

Radiator
Senior Member

I wonder how many transistors will there be on this thing .
Edit: Hmm.. 300 million transistors more compared to the HD 3870 . And nVidia doubled it's transistor count compared to the G80 .

Sunday, March 29, 2009 7:30:43 PM

Radiator
Senior Member

Lol , it still says GDDR3, GDDR4 here .

Wednesday, April 22, 2009 11:30:36 PM

-RK
Senior Member

hahaha, yeah I see that.

Wednesday, March 16, 2011 12:55:36 PM

The RV770PRO is GDDR3 and the RV770XT is GDDR5, there's no GDDR4 version AFAIK. I owned two of these in Crossfire and their performance was so spectacular that was able to keep up with newer cards like the HD 5870. It uses a lot of power at idle and runs hot, but aren't noisy and their image quality and performance are top notch, no matter if you're playing DX9/DX10/DX10.1 tittles. The HD 4870 is a card that shows the prowess of the original R600 design, even though it is interpolator limited so it will never reach its full theoritcal texture filtering potential, which got fixed with the HD 5x00 series which does the interpolation work on shaders with better performance.

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