Summary
AMD released the Radeon HD 3870X2 in 2008. This graphics card features the R680 GPU, manufactured on a 55nm process. It comes equipped with 512 MB GDDR3 memory on a 256(x2)-bit interface, delivering up to 57600(x2) MB/s of bandwidth. The GPU operates at 825 MHz with a theoretical compute performance of 528000(x2) MFLOPS. The card connects via PCIe16X and requires 6+8pin external power. It supports DX10.1.
Performance
GPU Clock
825 MHz
Memory Clock
1800(900)
Shader Performance
528000(x2) MFLOPS
Pixel Fillrate
13200(x2) MP/s
Texel Fillrate
13200(x2) MT/s
Memory
Memory Size
512 MB
Bus Width
256(x2)-bit
Memory Type
GDDR3
Max Bandwidth
57600(x2) MB/s
Architecture
GPU Chip
R680
Core Config
320 SP; 16 TMU/ROP(x2)
Vertex Processors
320(x2)
Process Size
55nm
Transistors
666m(x2)
Compatibility
DirectX
DX10.1
Bus Slot
PCIe16X
External Power
6+8pin
Release
Release Year
2008
Launch Price
$449
Performance to Price
Worse
Better
Performance Comparison
Shader Performance (MFLOPS)
Memory Bandwidth (MB/s)
Game Performance Estimates
FPS estimates scaled from RTX 3060 benchmark data. Actual results vary based on CPU, drivers, and game updates.
Cyberpunk 2077
2020Medium
4
FPS
High
3
FPS
Ultra
2
FPS
Red Dead Redemption 2
2019Medium
3
FPS
High
2
FPS
Ultra
2
FPS
GTA V
2015Medium
6
FPS
High
5
FPS
Ultra
4
FPS
Fortnite
2017Medium
7
FPS
High
5
FPS
Ultra
3
FPS
Valorant
2020Medium
16
FPS
High
13
FPS
Ultra
10
FPS
Counter-Strike 2
2023Medium
8
FPS
High
6
FPS
Ultra
4
FPS
Call of Duty: MW III
2023Medium
5
FPS
High
4
FPS
Ultra
3
FPS
Apex Legends
2019Medium
6
FPS
High
5
FPS
Ultra
4
FPS
Elden Ring
2022Medium
2
FPS
High
2
FPS
Ultra
2
FPS
Hogwarts Legacy
2023Medium
3
FPS
High
2
FPS
Ultra
2
FPS
The Witcher 3
2015Medium
6
FPS
High
4
FPS
Ultra
3
FPS
Baldur's Gate 3
2023Medium
4
FPS
High
3
FPS
Ultra
2
FPS
60+ FPS (Smooth)
30-59 FPS (Playable)
<30 FPS (Low)
Notes
Dual GPU card.