Home GPU Comparison ATI Radeon HD 4870 vs ATI Radeon HD 3850 AGP

ATI Radeon HD 4870 vs ATI Radeon HD 3850 AGP

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 512MB VRAM Radeon HD 3850 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 52.99GB/s)
480 additional rendering cores
ATI Radeon HD 3850 AGP 's Advantages
Lower TDP (75W vs 150W)

Score

Benchmark

FP32 (float)
Radeon HD 4870 +180%
1.2 TFLOPS
Radeon HD 3850 AGP
0.428 TFLOPS
VS

Graphics Card

Jun 2008
Release Date
Jan 2008
Radeon R700
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
AGP 8x

Clock Speeds

-
-
-
-
-
-
900 MHz
Memory Clock
828 MHz

Memory

512MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
115.2GB/s
Bandwidth
52.99GB/s

Render Config

10
Compute Units
4
-
-
-
800
Shading Units
320
40
TMUs
16
16
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

12.00 GPixel/s
Pixel Rate
10.69 GPixel/s
30.00 GTexel/s
Texture Rate
10.69 GTexel/s
-
-
-
1200 GFLOPS
FP32 (float)
427.5 GFLOPS
240.0 GFLOPS
FP64 (double)
85.50 GFLOPS

Board Design

150W
TDP
75W
450 W
Suggested PSU
250 W
2x DVI 1x S-Video
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
1x 8-pin

Graphics Processor

RV770
GPU Name
RV670
RV770 XT (215-0669049)
GPU Variant
RV670 PRO (215-0708003)
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.956 billion
Transistors
0.666 billion
256 mm²
Die Size
192 mm²

Graphics Features

10.1 (10_1)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3 (full) 4.0 (partial)
1.1
OpenCL
N/A
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
4.1

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