NVIDIA GeForce 8800 GT Mac Edition vs AMD Radeon HD 6990
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8800 GT Mac Edition and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 8800 GT Mac Edition 's Advantages
Lower TDP (125W vs 375W)
AMD Radeon HD 6990 's Advantages
Released 3 years and 1 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 57.60GB/s)
1424 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8800 GT Mac Edition
0.336 TFLOPS
Radeon HD 6990
+658%
2.55 TFLOPS
Graphics Card
Feb 2008
Release Date
Mar 2011
GeForce 8
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
2GB
GDDR3
Memory Type
GDDR5
256bit
Memory Bus
256bit
57.60GB/s
Bandwidth
160.0GB/s
Render Config
-
Compute Units
24
14
SM Count
-
112
Shading Units
1536
56
TMUs
96
16
ROPs
32
-
-
-
-
-
-
-
L1 Cache
8 KB (per CU)
64 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
9.600 GPixel/s
Pixel Rate
26.56 GPixel/s
33.60 GTexel/s
Texture Rate
79.68 GTexel/s
-
-
-
336.0 GFLOPS
FP32 (float)
2.550 TFLOPS
-
FP64 (double)
637.4 GFLOPS
Board Design
125W
TDP
375W
300 W
Suggested PSU
750 W
2x DVI
Outputs
1x DVI
4x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
G92
GPU Name
Antilles
G92-270-A2
GPU Variant
Antilles XT
(215-0807027)
Tesla
Architecture
TeraScale 3
TSMC
Foundry
TSMC
65 nm
Process Size
40 nm
0.754 billion
Transistors
2.64 billion
324 mm²
Die Size
389 mm²
Graphics Features
11.1 (10_0)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
1.1
CUDA
-
4.0
Shader Model
5.0
