GeForce 840M vs GeForce 840A
GeForce 840M
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GeForce 840A
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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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. Components placed above yours deliver better value for money. The GeForce 840M is positioned at rank 352 and the GeForce 840A is on rank 349, so the GeForce 840A offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce 840M
Performance Per Dollar GeForce 840A
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce 840A is the superior choice for raw performance. It leads with a 1.4% higher G3D Mark score. However, the GeForce 840M offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce 840M | GeForce 840A |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.4%) | ✅Leading raw performance (+1.4%) |
| Longevity | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+300%) | ❌ Less VRAM capacity |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce 840A remains the clear technical winner. Check real-time availability to determine if the performance gap justifies the market price.
Performance Check
Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.
Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.
Technical Specifications
Side-by-side comparison of GeForce 840M and GeForce 840A
GeForce 840M
The GeForce 840M is manufactured by NVIDIA. It was released in March 12 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: 1,100 points.
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.
Graphics Performance
The GeForce 840M scores 1,100 and the GeForce 840A reaches 1,115 in the G3D Mark benchmark — just a 1.4% difference, making them near-identical in rasterization performance. The GeForce 840M is built on Maxwell while the GeForce 840A uses Maxwell, both on a 28 nm process. Shader units: 384 (GeForce 840M) vs 384 (GeForce 840A). Raw compute: 0.8632 TFLOPS (GeForce 840M) vs 0.8632 TFLOPS (GeForce 840A). Boost clocks: 1124 MHz vs 1124 MHz.
| Feature | GeForce 840M | GeForce 840A |
|---|---|---|
| G3D Mark Score | 1,100 | 1,115+1% |
| Architecture | Maxwell | Maxwell |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.8632 TFLOPS | 0.8632 TFLOPS |
| Boost Clock | 1124 MHz | 1124 MHz |
| ROPs | 8 | 8 |
| TMUs | 16 | 16 |
| L1 Cache | 192 KB | 192 KB |
| L2 Cache | 1 MB | 1 MB |
Advanced Features (DLSS/FSR)
| Feature | GeForce 840M | GeForce 840A |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
The GeForce 840M comes with 2 GB of VRAM, while the GeForce 840A has 512 MB. The GeForce 840M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.
| Feature | GeForce 840M | GeForce 840A |
|---|---|---|
| VRAM Capacity | 2 GB+300% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 1 MB | 1 MB |
Display & API Support
DirectX support: 11.0 (GeForce 840M) vs 12 (11_0) (GeForce 840A). Vulkan: 1.2 vs 1.1. OpenGL: 4.5 vs 4.5. Maximum simultaneous displays: 1 vs 3.
| Feature | GeForce 840M | GeForce 840A |
|---|---|---|
| DirectX | 11.0 | 12 (11_0)+9% |
| Vulkan | 1.2+9% | 1.1 |
| OpenGL | 4.5 | 4.5 |
| Max Displays | 1 | 3+200% |
Media & Encoding
Hardware encoder: NVENC 2.0 (GeForce 840M) vs NVENC (Maxwell) (GeForce 840A). Decoder: PureVideo HD VP6 vs NVDEC (Maxwell). Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265 (GeForce 840M) vs H.264,VC-1,MPEG-2 (GeForce 840A).
| Feature | GeForce 840M | GeForce 840A |
|---|---|---|
| Encoder | NVENC 2.0 | NVENC (Maxwell) |
| Decoder | PureVideo HD VP6 | NVDEC (Maxwell) |
| Codecs | MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265 | H.264,VC-1,MPEG-2 |
Power & Dimensions
The GeForce 840M draws 33W versus the GeForce 840A's 33W — a 0% difference. The GeForce 840A is more power-efficient. Recommended PSU: 350W (GeForce 840M) vs 350W (GeForce 840A). Power connectors: Legacy vs Legacy. Typical load temperature: 75°C vs 75°C.
| Feature | GeForce 840M | GeForce 840A |
|---|---|---|
| TDP | 33W | 33W |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | Legacy |
| Length | 0mm | — |
| Height | 0mm | — |
| Slots | 0 | — |
| Temp (Load) | 75°C | 75°C |
| Perf/Watt | 33.3 | 33.8+2% |
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