Home GPU Comparison AMD Radeon R9 280X vs ATI Radeon HD 3850

AMD Radeon R9 280X vs ATI Radeon HD 3850

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X and 512MB VRAM Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 280X 's Advantages
Released 5 years and 11 months late
Boost Clock1000MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (288.0GB/s vs 53.12GB/s)
1728 additional rendering cores
ATI Radeon HD 3850 's Advantages
Lower TDP (75W vs 250W)

Score

Benchmark

FP32 (float)
Radeon R9 280X +857%
4.096 TFLOPS
Radeon HD 3850
0.428 TFLOPS
VS

Graphics Card

Oct 2013
Release Date
Nov 2007
Volcanic Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

850 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
830 MHz

Memory

3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
53.12GB/s

Render Config

32
Compute Units
4
-
-
-
2048
Shading Units
320
128
TMUs
16
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

32.00 GPixel/s
Pixel Rate
10.69 GPixel/s
128.0 GTexel/s
Texture Rate
10.69 GTexel/s
-
-
-
4.096 TFLOPS
FP32 (float)
427.5 GFLOPS
1024 GFLOPS
FP64 (double)
85.50 GFLOPS

Board Design

250W
TDP
75W
600 W
Suggested PSU
250 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

Graphics Processor

Tahiti
GPU Name
RV670
Tahiti XTL (215-0821065)
GPU Variant
RV670 PRO (215-0708003)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.666 billion
352 mm²
Die Size
192 mm²

Graphics Features

12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.1

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