AMD Radeon HD 7770 GHz Edition vs ATI Radeon HD 2900 XT

Comparative analysis of AMD Radeon HD 7770 GHz Edition and ATI Radeon HD 2900 XT videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Graphics Score.

AMD Radeon HD 7770 GHz Edition

ATI Radeon HD 2900 XT

Differences

Reasons to consider the AMD Radeon HD 7770 GHz Edition

Videocard is newer: launch date 4 year(s) 9 month(s) later
3.4x more texture fill rate: 40 GTexel / s vs 11.89 GTexel / s
2x more pipelines: 640 vs 320
2.7x better floating-point performance: 1,280 gflops vs 475.5 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 80 nm
Around 72% lower typical power consumption: 125 Watt vs 215 Watt
2x more maximum memory size: 1 GB vs 512 MB
3.3x better performance in PassMark - G3D Mark: 2174 vs 660
Around 16% better performance in PassMark - G2D Mark: 462 vs 397

Specifications (specs)
Launch date	15 February 2012 vs 14 May 2007
Texture fill rate	40 GTexel / s vs 11.89 GTexel / s
Pipelines	640 vs 320
Floating-point performance	1,280 gflops vs 475.5 gflops
Manufacturing process technology	28 nm vs 80 nm
Thermal Design Power (TDP)	125 Watt vs 215 Watt
Maximum memory size	1 GB vs 512 MB
Benchmarks
PassMark - G3D Mark	2174 vs 660
PassMark - G2D Mark	462 vs 397

Reasons to consider the ATI Radeon HD 2900 XT

Around 47% higher memory clock speed: 1656 MHz vs 1125 MHz

Memory clock speed	1656 MHz vs 1125 MHz

Compare benchmarks

GPU 1: AMD Radeon HD 7770 GHz Edition
GPU 2: ATI Radeon HD 2900 XT

PassMark - G3D Mark

GPU 1

GPU 2

2174

660

PassMark - G2D Mark

GPU 1

GPU 2

462

397

Name	AMD Radeon HD 7770 GHz Edition	ATI Radeon HD 2900 XT
PassMark - G3D Mark	2174	660
PassMark - G2D Mark	462	397
Geekbench - OpenCL	14263
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	33.836
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	506.712
CompuBench 1.5 Desktop - T-Rex (Frames/s)	3.01
CompuBench 1.5 Desktop - Video Composition (Frames/s)	49.787
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	153.657
GFXBench 4.0 - Car Chase Offscreen (Frames)	3707
GFXBench 4.0 - Manhattan (Frames)	4524
GFXBench 4.0 - T-Rex (Frames)	14630
GFXBench 4.0 - Car Chase Offscreen (Fps)	3707
GFXBench 4.0 - Manhattan (Fps)	4524
GFXBench 4.0 - T-Rex (Fps)	14630
3DMark Fire Strike - Graphics Score	711

Compare specifications (specs)

	AMD Radeon HD 7770 GHz Edition	ATI Radeon HD 2900 XT
Essentials
Architecture	GCN 1.0	TeraScale
Code name	Cape Verde	R600
Design	AMD Radeon HD 7000 Series
Launch date	15 February 2012	14 May 2007
Launch price (MSRP)	$159	$399
Place in performance rating	557	408
Type	Desktop	Desktop
Technical info
Boost clock speed	1000 MHz
Floating-point performance	1,280 gflops	475.5 gflops
Manufacturing process technology	28 nm	80 nm
Pipelines	640	320
Stream Processors	640
Texture fill rate	40 GTexel / s	11.89 GTexel / s
Thermal Design Power (TDP)	125 Watt	215 Watt
Transistor count	1,500 million	720 million
Core clock speed		743 MHz
Video outputs and ports
Display Connectors	1x DVI, 1x HDMI, 2x mini-DisplayPort	2x DVI, 1x S-Video
DisplayPort support
Dual-link DVI support
Eyefinity
HDMI
VGA
Compatibility, dimensions and requirements
Bus support	PCIe 2.1 x16
Interface	PCIe 3.0 x16	PCIe 1.0 x16
Length	210 mm	241 mm
Supplementary power connectors	1x 6-pin	1x 6-pin + 1x 8-pin
API support
DirectX	11	10.0
OpenGL	4.5	3.3
Memory
Maximum RAM amount	1 GB	512 MB
Memory bandwidth	72 GB/s	106.0 GB / s
Memory bus width	128 Bit	512 Bit
Memory clock speed	1125 MHz	1656 MHz
Memory type	GDDR5	GDDR3
Technologies
AMD Eyefinity
CrossFire
FreeSync