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GPU Comparison
AMD Radeon HD 7870 XT vs ATI Radeon HD 4830
AMD Radeon HD 7870 XT vs ATI Radeon HD 4830
VS
AMD Radeon HD 7870 XT
ATI Radeon HD 4830
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 512MB VRAM Radeon HD 4830 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 4 years and 1 months late
Boost Clock975MHz
Larger VRAM bandwidth (192.0GB/s vs 57.60GB/s)
896 additional rendering cores
ATI Radeon HD 4830 's Advantages
Lower TDP (95W vs 185W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 XT
+306%
2.995 TFLOPS
Radeon HD 4830
0.736 TFLOPS
Radeon HD 7870 XT
VS
Radeon HD 4830
Graphics Card
Nov 2012
Release Date
Oct 2008
Southern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
925 MHz
Base Clock
-
975 MHz
Boost Clock
-
1500 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
192.0GB/s
Bandwidth
57.60GB/s
Render Config
-
SM Count
-
24
Compute Units
8
1536
Shading Units
640
96
TMUs
32
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
31.20 GPixel/s
Pixel Rate
9.200 GPixel/s
93.60 GTexel/s
Texture Rate
18.40 GTexel/s
-
FP16 (half)
-
2.995 TFLOPS
FP32 (float)
736.0 GFLOPS
748.8 GFLOPS
FP64 (double)
147.2 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV770
Tahiti LE (215-0821122)
GPU Variant
RV770 LE (215-0669075)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.956 billion
352 mm²
Die Size
256 mm²
Board Design
185W
TDP
95W
450 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
1x 6-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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