NVIDIA GeForce GTX 780 Ti Engineering Sample vs ATI Radeon HD 2900 XT
We compared two Desktop platform GPUs: 3GB VRAM GeForce GTX 780 Ti Engineering Sample and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 780 Ti Engineering Sample 's Advantages
Boost Clock928MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (336.6GB/s vs 106.0GB/s)
2560 additional rendering cores
ATI Radeon HD 2900 XT 's Advantages
Lower TDP (215W vs 250W)
Score
Benchmark
FP32 (float)
GeForce GTX 780 Ti Engineering Sample
+1022%
5.345 TFLOPS
Radeon HD 2900 XT
0.476 TFLOPS
Graphics Card
Unknown
Release Date
May 2007
GeForce 700
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
875 MHz
Base Clock
-
928 MHz
Boost Clock
-
1753 MHz
Memory Clock
828 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
512bit
336.6GB/s
Bandwidth
106.0GB/s
Render Config
-
Compute Units
4
-
-
-
2880
Shading Units
320
240
TMUs
16
48
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
1536 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
55.68 GPixel/s
Pixel Rate
11.89 GPixel/s
222.7 GTexel/s
Texture Rate
11.89 GTexel/s
-
-
-
5.345 TFLOPS
FP32 (float)
475.5 GFLOPS
222.7 GFLOPS
FP64 (double)
-
Board Design
250W
TDP
215W
600 W
Suggested PSU
550 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
2x DVI
1x S-Video
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
GK180
GPU Name
R600
GK180-425-A1
GPU Variant
R600 XT
(215RGMDKA13FG)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
7.08 billion
Transistors
0.72 billion
561 mm²
Die Size
420 mm²
Graphics Features
12 (11_0)
DirectX
10.0 (10_0)
4.6
OpenGL
3.3 (full)
4.0 (partial)
3.0
OpenCL
N/A
1.2.175
Vulkan
N/A
3.5
CUDA
-
5.1
Shader Model
4.0
