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GPU Comparison
AMD Radeon HD 7870 XT vs NVIDIA GeForce 8800 Ultra
AMD Radeon HD 7870 XT vs NVIDIA GeForce 8800 Ultra
VS
AMD Radeon HD 7870 XT
NVIDIA GeForce 8800 Ultra
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 768MB VRAM GeForce 8800 Ultra to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 XT 's Advantages
Released 5 years and 6 months late
Boost Clock975MHz
Larger VRAM bandwidth (192.0GB/s vs 103.7GB/s)
1408 additional rendering cores
NVIDIA GeForce 8800 Ultra 's Advantages
Lower TDP (171W vs 185W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 XT
+673%
2.995 TFLOPS
GeForce 8800 Ultra
0.387 TFLOPS
Radeon HD 7870 XT
VS
GeForce 8800 Ultra
Graphics Card
Nov 2012
Release Date
May 2007
Southern Islands
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
925 MHz
Base Clock
-
975 MHz
Boost Clock
-
1500 MHz
Memory Clock
1080 MHz
Memory
2GB
Memory Size
768MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
384bit
192.0GB/s
Bandwidth
103.7GB/s
Render Config
-
SM Count
16
24
Compute Units
-
1536
Shading Units
128
96
TMUs
32
32
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
96 KB
Theoretical Performance
31.20 GPixel/s
Pixel Rate
14.69 GPixel/s
93.60 GTexel/s
Texture Rate
39.17 GTexel/s
-
FP16 (half)
-
2.995 TFLOPS
FP32 (float)
387.1 GFLOPS
748.8 GFLOPS
FP64 (double)
-
Graphics Processor
Tahiti
GPU Name
G80
Tahiti LE (215-0821122)
GPU Variant
G80-450-A3
GCN 1.0
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
90 nm
4.313 billion
Transistors
0.681 billion
352 mm²
Die Size
484 mm²
Board Design
185W
TDP
171W
450 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
2x 6-pin
Graphics Features
12 (11_1)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
1.2
OpenCL
1.1 (1.0)
1.2
Vulkan
N/A
-
CUDA
1.0
5.1
Shader Model
4.0
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