Home GPU Comparison ATI Radeon HD 3850 AGP vs AMD Radeon HD 7970 X2

ATI Radeon HD 3850 AGP vs AMD Radeon HD 7970 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 AGP and 3GB VRAM Radeon HD 7970 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3850 AGP 's Advantages
Lower TDP (75W vs 500W)
AMD Radeon HD 7970 X2 's Advantages
Released 4 years and 7 months late
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (264.0GB/s vs 52.99GB/s)
1728 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 3850 AGP
0.428 TFLOPS
Radeon HD 7970 X2 +785%
3.789 TFLOPS
VS

Graphics Card

Jan 2008
Release Date
Aug 2012
Radeon R600
Generation
Southern Islands
Desktop
Type
Desktop
AGP 8x
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
-
-
-
-
-
828 MHz
Memory Clock
1375 MHz

Memory

512MB
Memory Size
3GB
GDDR3
Memory Type
GDDR5
256bit
Memory Bus
384bit
52.99GB/s
Bandwidth
264.0GB/s

Render Config

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

Theoretical Performance

10.69 GPixel/s
Pixel Rate
29.60 GPixel/s
10.69 GTexel/s
Texture Rate
118.4 GTexel/s
-
-
-
427.5 GFLOPS
FP32 (float)
3.789 TFLOPS
85.50 GFLOPS
FP64 (double)
947.2 GFLOPS

Board Design

75W
TDP
500W
250 W
Suggested PSU
900 W
2x DVI 1x S-Video
Outputs
2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 8-pin
Power Connectors
3x 8-pin

Graphics Processor

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

Graphics Features

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

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