Mobility Radeon HD 3870 X2
AMD
G3D Mark
478
MSRP
$449
AVG Price
$50
Performance Spectrum - GPU
About G3D Mark
G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.
Overview
The Mobility Radeon HD 3870 X2 is manufactured by AMD. It was released in September 1 2008. It features the TeraScale architecture. The core clock speed is 660 MHz. It has 320 ×2 shading units. The thermal design power (TDP) is 110W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 478 points.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. The Mobility Radeon HD 3870 X2 is positioned at rank #689 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Mobility Radeon HD 3870 X2
FPS Benchmarks
Predicted performance for Mobility Radeon HD 3870 X2 across popular games. Tested paired with Ryzen 7 7800X3D to isolate GPU performance.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Technical Analysis
Detailed breakdown of Mobility Radeon HD 3870 X2 specifications and capabilities.
Graphics Performance
The Mobility Radeon HD 3870 X2 scores 478 in the G3D Mark benchmark (the standard measure of rasterization GPU performance), placing it in the Entry Level tier as a Legacy generation graphics card. It is built on the TeraScale (2005−2013) architecture (codename: M88), manufactured on a 55 nm process— smaller process nodes improve power efficiency and transistor density. It packs 320 ×2 shader units (the primary compute units for rendering pixels), 16 ×2 TMUs (texture mapping units), and 16 ×2 ROPs (render output units that handle final pixel output). Raw FP32 compute power: 0.4224 TFLOPS ×2 — this measures the theoretical peak floating-point performance.
| Specification | Mobility Radeon HD 3870 X2 |
|---|---|
| G3D MarkPassMark 3D graphics benchmark score | 478 |
| ArchitectureGPU microarchitecture generation | TeraScale (2005−2013) |
| CodenameInternal GPU die codename | M88 |
| Manufacturing ProcessFabrication node — smaller = more efficient | 55 nm |
| Shader UnitsCore compute units for rendering/compute | 320 ×2 |
| TMUsTexture Mapping Units — handle texture sampling | 16 ×2 |
| ROPsRender Output Units — final pixel/color blending | 16 ×2 |
| Base ClockGuaranteed minimum GPU frequency | 660 MHz |
| Compute (FP32)Peak single-precision floating-point performance | 0.4224 TFLOPS ×2 |
| Texture Fill RateTextures processed per second | 10.56 ×2 GTexel/s |
| PCIe InterfaceCPU↔GPU data link generation | PCIe 1.1 x16 |
| Transistor Count | 666 million |
| Performance RankPosition in global GPU performance ranking | #919 |
Video Memory (VRAM)
The Mobility Radeon HD 3870 X2 is equipped with 0.002 GB of GDDR5 video memory connected via a 64-bit memory bus, delivering Unknown of bandwidth. Memory operates at 8 Gbps effective speed.
| Specification | Mobility Radeon HD 3870 X2 |
|---|---|
| VRAM SizeVideo memory capacity — more = better for high-res textures | 0.002 GB |
| VRAM TypeMemory technology generation | GDDR5 |
| Memory BusWidth of data path — wider = more bandwidth | 64-bit |
| Memory SpeedEffective memory data rate | 8 Gbps |
| BandwidthMaximum data throughput between GPU and VRAM | Unknown |
| L2 Cache | 256 kB |
Advanced Features & APIs
The Mobility Radeon HD 3870 X2 supports modern upscaling and frame generation technologies: FidelityFX Super Resolution — these can dramatically boost effective FPS by generating intermediate frames or upscaling from lower internal resolution. Graphics API support: DirectX 10.1— latest API versions enable the most advanced rendering features like ray tracing and mesh shaders.
| Specification | Mobility Radeon HD 3870 X2 |
|---|---|
| FSR Frame Generation | ❌ Not Supported |
| AMD Fluid Motion Frames | ❌ Not Supported |
| FidelityFX Super Resolution | ✅ Supported |
| DirectXMicrosoft graphics API version | 10.1 |
| Compute APIGPGPU framework (CUDA/ROCm/OpenCL) | OpenCL 1.1 |
| Multi-GPUSLI/CrossFire/NVLink support | CrossFire |
Display & Media
Display outputs: — supports up to 0 simultaneous displays. Hardware encoder: UVD, decoder: UVD— dedicated hardware for video encoding/decoding accelerates streaming, recording, and video playback.
| Specification | Mobility Radeon HD 3870 X2 |
|---|---|
| Max DisplaysMaximum simultaneously connected monitors | 0 |
| Hardware EncoderVideo encoding engine version | UVD |
| Hardware DecoderVideo decoding engine version | UVD |
Power & Dimensions
The Mobility Radeon HD 3870 X2 draws 110 Watt under load (TDP) — a 350W PSU minimum is recommended. Power connector: PCIe-powered. Physical size: 1mm long, occupying 0 expansion slots— verify your case has clearance before purchasing.
| Specification | Mobility Radeon HD 3870 X2 |
|---|---|
| TDPPower consumption under load | 110 Watt |
| Recommended PSUMinimum power supply wattage | 350W |
| Power ConnectorRequired PCIe power cable type | PCIe-powered |
| Card LengthGPU card length — check case clearance | 1mm |
| Slot WidthExpansion slots occupied | 0-slot |
Value Analysis
At an average price of $50 (MSRP: $449), the Mobility Radeon HD 3870 X2 delivers 10 G3D Mark points per dollar. It holds Rank #689 in the cost-benefit ranking — a comprehensive score that weighs raw performance against current market pricing. Overall performance ranking position: #919 among all indexed GPUs.
| Specification | Mobility Radeon HD 3870 X2 |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $449 |
| Avg Price (30d)Average market price over the last 30 days | $50 |
| Cost-Benefit RankOverall value ranking position | #689 |
| Performance RankPosition in global GPU performance ranking | #919 |
| Release Date | September 1 2008 |
| Release Year | 2008 |
Similar Performance
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Our Recommendation for Mobility Radeon HD 3870 X2
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
Popular Comparisons
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Compare Mobility Radeon HD 3870 X2
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