
GeForce 840A

Mobility Radeon HD 5870
GeForce 840A vs Mobility Radeon HD 5870 Performance Spectrum
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.
GeForce 840A vs Mobility Radeon HD 5870 FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.
Search any supported game below to compare 1080p FPS for both components.

Path of Exile 2

Counter-Strike 2

League of Legends
GeForce 840A vs Mobility Radeon HD 5870: Pros, Cons & Final Verdict
See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.
GeForce 840A
2014Why buy it
- ✅Costs $299 less on MSRP ($100 MSRP vs $399 MSRP).
- ✅Delivers 308.9% more G3D Mark for each dollar spent, at 11.2 vs 2.7 G3D/$ ($100 MSRP vs $399 MSRP).
- ✅Draws 33W instead of 50W, a 17W reduction.
Trade-offs
- ❌Less VRAM, with 512 MB vs 1 GB for high-resolution textures and newer games.
- ❌2014 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
Mobility Radeon HD 5870
2010Why buy it
- ✅100% more VRAM for high-resolution textures and newer games (1 GB vs 512 MB).
Trade-offs
- ❌2010 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌299% HIGHER MSRP$399 MSRPvs$100 MSRP
- ❌Lower G3D Mark per dollar, at 2.7 vs 11.2 G3D/$ ($399 MSRP vs $100 MSRP).
- ❌51.5% higher power demand at 50W vs 33W.
Quick Answers
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GeForce 840A vs Mobility Radeon HD 5870 Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

GeForce 840A
The GeForce 840A is manufactured by NVIDIA. It was released in March 17 2014. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,115 points.

Mobility Radeon HD 5870
The Mobility Radeon HD 5870 is manufactured by AMD. It was released in January 7 2010. It features the TeraScale 2 architecture. The core clock speed is 700 MHz. It has 800 shading units. The thermal design power (TDP) is 50W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,088 points.
Graphics Performance
The GeForce 840A scores 1,115 and the Mobility Radeon HD 5870 reaches 1,088 in the G3D Mark benchmark — just a 2.5% difference, making them near-identical in rasterization performance. The GeForce 840A is built on Maxwell while the Mobility Radeon HD 5870 uses TeraScale 2, both on 28 nm vs 40 nm. Shader units: 384 (GeForce 840A) vs 800 (Mobility Radeon HD 5870). Raw compute: 0.8632 TFLOPS (GeForce 840A) vs 1.12 TFLOPS (Mobility Radeon HD 5870).
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| G3D Mark Score | 1,115+2% | 1,088 |
| Architecture | Maxwell | TeraScale 2 |
| Process Node | 28 nm | 40 nm |
| Shading Units | 384 | 800+108% |
| Compute (TFLOPS) | 0.8632 TFLOPS | 1.12 TFLOPS+30% |
| ROPs | 8 | 16+100% |
| TMUs | 16 | 40+150% |
| L1 Cache | 192 KB+140% | 80 KB |
| L2 Cache | 1 MB+300% | 0.25 MB |
Advanced Features (DLSS/FSR)
The GeForce 840A gets NVIDIA DLSS, which still tends to look cleaner in motion. The Mobility Radeon HD 5870 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| Upscaling Tech | Upscaling support | FSR Upscaling / FSR 4 |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | NVIDIA Reflex | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce 840A has 512 MB of VRAM, while the Mobility Radeon HD 5870 carries 1 GB. Mobility Radeon HD 5870 gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce 840A and 128-bit on the Mobility Radeon HD 5870. L2 Cache: 1 MB (GeForce 840A) vs 0.25 MB (Mobility Radeon HD 5870) — the GeForce 840A has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| VRAM Capacity | 0.5 GB | 1 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 1 MB+300% | 0.25 MB |
Display & API Support
DirectX support: 12 (11_0) (GeForce 840A) vs 11 (5.0) (Mobility Radeon HD 5870). Vulkan: 1.1 vs N/A. OpenGL: 4.5 vs 4.4. Maximum simultaneous displays: 3 vs 0.
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| DirectX | 12 (11_0)+9% | 11 (5.0) |
| Vulkan | 1.1 | N/A |
| OpenGL | 4.5+2% | 4.4 |
| Max Displays | 3 | 0 |
Media & Encoding
Hardware encoder: NVENC (Maxwell) (GeForce 840A) vs None (Mobility Radeon HD 5870). Decoder: NVDEC (Maxwell) vs UVD 2.2. Supported codecs: H.264,VC-1,MPEG-2 (GeForce 840A) vs H.264,VC-1,MPEG-2 (Mobility Radeon HD 5870).
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| Encoder | NVENC (Maxwell) | None |
| Decoder | NVDEC (Maxwell) | UVD 2.2 |
| Codecs | H.264,VC-1,MPEG-2 | H.264,VC-1,MPEG-2 |
Power & Dimensions
The GeForce 840A draws 33W versus the Mobility Radeon HD 5870's 50W — a 41% difference. The GeForce 840A is more power-efficient. Recommended PSU: 350W (GeForce 840A) vs 350W (Mobility Radeon HD 5870). Power connectors: Legacy vs PCIe-powered. Typical load temperature: 75°C vs 85.
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| TDP | 33W-34% | 50W |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | PCIe-powered |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | — | 0 |
| Temp (Load) | 75°C-12% | 85 |
| Perf/Watt | 33.8+55% | 21.8 |
Value Analysis
At launch, the GeForce 840A came in at $100, while the Mobility Radeon HD 5870 launched at $399. On MSRP, GeForce 840A was 74.9% cheaper ($299 less). Performance per dollar on MSRP (G3D Mark / MSRP): 11.2 (GeForce 840A) vs 2.7 (Mobility Radeon HD 5870) — the GeForce 840A offers 314.8% better value. The newer card here is GeForce 840A (2014 vs 2010).
| Feature | GeForce 840A | Mobility Radeon HD 5870 |
|---|---|---|
| MSRP | $100-75% | $399 |
| Performance per Dollar | 11.2+315% | 2.7 |
| Codename | GM108 | Broadway |
| Release | March 17 2014 | January 7 2010 |
| Ranking | #850 | #846 |
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