
GeForce 840M vs Radeon R7 A8-7690K

GeForce 840M
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Radeon R7 A8-7690K
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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 Radeon R7 A8-7690K is on rank 97, so the Radeon R7 A8-7690K 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 Radeon R7 A8-7690K
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon R7 A8-7690K is the superior choice for raw performance. It leads with a 3.7% 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 | Radeon R7 A8-7690K |
|---|---|---|
| Performance | ❌Lower raw frame rates (-3.7%) | ✅Leading raw performance (+3.7%) |
| Longevity | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) | 🛑Obsolete Architecture (2015 / GCN 1.0 (2012−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+300%) | ❌ Less VRAM capacity |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
While current pricing data is unavailable, the Radeon R7 A8-7690K 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.

Path of Exile 2

Counter-Strike 2

League of Legends

Valorant
Technical Specifications
Side-by-side comparison of GeForce 840M and Radeon R7 A8-7690K

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.

Radeon R7 A8-7690K
The Radeon R7 A8-7690K is manufactured by AMD. It was released in June 18 2015. It features the GCN 1.0 architecture. The boost clock speed is 975 MHz. It has 1024 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,141 points. Launch price was $149.
Graphics Performance
The GeForce 840M scores 1,100 and the Radeon R7 A8-7690K reaches 1,141 in the G3D Mark benchmark — just a 3.7% difference, making them near-identical in rasterization performance. The GeForce 840M is built on Maxwell while the Radeon R7 A8-7690K uses GCN 1.0, both on a 28 nm process. Shader units: 384 (GeForce 840M) vs 1,024 (Radeon R7 A8-7690K). Raw compute: 0.8632 TFLOPS (GeForce 840M) vs 1.997 TFLOPS (Radeon R7 A8-7690K). Boost clocks: 1124 MHz vs 975 MHz.
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| G3D Mark Score | 1,100 | 1,141+4% |
| Architecture | Maxwell | GCN 1.0 |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 1024+167% |
| Compute (TFLOPS) | 0.8632 TFLOPS | 1.997 TFLOPS+131% |
| Boost Clock | 1124 MHz+15% | 975 MHz |
| ROPs | 8 | 32+300% |
| TMUs | 16 | 64+300% |
| L1 Cache | 192 KB | 256 KB+33% |
| L2 Cache | 1 MB+100% | 0.5 MB |
Advanced Features (DLSS/FSR)
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce 840M comes with 2 GB of VRAM, while the Radeon R7 A8-7690K 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. L2 Cache: 1 MB (GeForce 840M) vs 0.5 MB (Radeon R7 A8-7690K) — the GeForce 840M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| 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+100% | 0.5 MB |
Display & API Support
DirectX support: 11.0 (GeForce 840M) vs 12 (Radeon R7 A8-7690K). Maximum simultaneous displays: 1 vs 0.
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| DirectX | 11.0 | 12+9% |
| Max Displays | 1 | 0 |
Media & Encoding
Hardware encoder: NVENC 2.0 (GeForce 840M) vs VCE 2.0 (Radeon R7 A8-7690K). Decoder: PureVideo HD VP6 vs UVD 4.2.
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| Encoder | NVENC 2.0 | VCE 2.0 |
| Decoder | PureVideo HD VP6 | UVD 4.2 |
| Codecs | MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265 | — |
Power & Dimensions
The GeForce 840M draws 33W versus the Radeon R7 A8-7690K's 100W — a 100.8% difference. The GeForce 840M is more power-efficient. Recommended PSU: 350W (GeForce 840M) vs 350W (Radeon R7 A8-7690K). Power connectors: Legacy vs None. Card length: 0mm vs 1mm, occupying 0 vs 0 slots.
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| TDP | 33W-67% | 100W |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | None |
| Length | 0mm | 1mm |
| Height | 0mm | — |
| Slots | 0 | 0 |
| Temp (Load) | 75°C | — |
| Perf/Watt | 33.3+192% | 11.4 |
Value Analysis
The Radeon R7 A8-7690K is the newer GPU (2015 vs 2014).
| Feature | GeForce 840M | Radeon R7 A8-7690K |
|---|---|---|
| MSRP | — | $80 |
| Avg Price (30d) | — | $40 |
| Codename | GM108 | Trinidad |
| Release | March 12 2014 | June 18 2015 |
| Ranking | #854 | #467 |
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