
GeForce GT 340

Quadro K420
GeForce GT 340 vs Quadro K420 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 GT 340 vs Quadro K420 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

Valorant

Among Us

Apex Legends

ARC Raiders

Baldur's Gate 3

Call of Duty: Black Ops 6
GeForce GT 340 vs Quadro K420: 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 GT 340
2014Why buy it
- ✅Costs $50 less on MSRP ($100 MSRP vs $150 MSRP).
- ✅Delivers 52.5% more G3D Mark for each dollar spent, at 7.4 vs 4.8 G3D/$ ($100 MSRP vs $150 MSRP).
- ✅Draws 64W instead of 108W, a 44W reduction.
Trade-offs
- ❌Lower average FPS than Quadro K420 across 50 tracked games in our benchmark data.
- ❌2014 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
Quadro K420
2014Why buy it
- ✅82.4% more average FPS across 50 tracked games in our benchmark data.
Trade-offs
- ❌2014 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌50% HIGHER MSRP$150 MSRPvs$100 MSRP
- ❌Lower G3D Mark per dollar, at 4.8 vs 7.4 G3D/$ ($150 MSRP vs $100 MSRP).
- ❌68.8% higher power demand at 108W vs 64W.
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GeForce GT 340 vs Quadro K420 Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

GeForce GT 340
The GeForce GT 340 is manufactured by NVIDIA. It was released in May 29 2014. It features the Kepler architecture. The core clock speed is 993 MHz. It has 384 shading units. The thermal design power (TDP) is 64W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 738 points. Launch price was $89.

Quadro K420
The Quadro K420 is manufactured by NVIDIA. It was released in July 22 2014. It features the Kepler architecture. The core clock ranges from 771 MHz to 784 MHz. It has 1344 shading units. The thermal design power (TDP) is 108W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 726 points. Launch price was $854.99.
Graphics Performance
The GeForce GT 340 scores 738 and the Quadro K420 reaches 726 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. The GeForce GT 340 is built on Kepler while the Quadro K420 uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce GT 340) vs 1,344 (Quadro K420). Raw compute: 0.7626 TFLOPS (GeForce GT 340) vs 2.107 TFLOPS (Quadro K420).
| Feature | GeForce GT 340 | Quadro K420 |
|---|---|---|
| G3D Mark Score | 738+2% | 726 |
| Architecture | Kepler | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 1344+250% |
| Compute (TFLOPS) | 0.7626 TFLOPS | 2.107 TFLOPS+176% |
| ROPs | 16 | 32+100% |
| TMUs | 32 | 112+250% |
| L1 Cache | 32 KB | 112 KB+250% |
| L2 Cache | 256 KB | 512 KB+100% |
Advanced Features (DLSS/FSR)
The GeForce GT 340 gets NVIDIA DLSS, which still tends to look cleaner in motion. The Quadro K420 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.
| Feature | GeForce GT 340 | Quadro K420 |
|---|---|---|
| Upscaling Tech | Upscaling support | Upscaling support |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | NVIDIA Reflex | Standard |
Video Memory (VRAM)
Both cards ship with 1 GB of GDDR5. Memory bus width is 128-bit on the GeForce GT 340 and 64-bit on the Quadro K420. L2 Cache: 256 KB (GeForce GT 340) vs 512 KB (Quadro K420) — the Quadro K420 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 340 | Quadro K420 |
|---|---|---|
| VRAM Capacity | 1 GB | 1 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 256 KB | 512 KB+100% |
Power & Dimensions
The GeForce GT 340 draws 64W versus the Quadro K420's 108W — a 51.2% difference. The GeForce GT 340 is more power-efficient. Recommended PSU: 300W (GeForce GT 340) vs 350W (Quadro K420). Power connectors: None vs PCIe-powered.
| Feature | GeForce GT 340 | Quadro K420 |
|---|---|---|
| TDP | 64W-41% | 108W |
| Recommended PSU | 300W-14% | 350W |
| Power Connector | None | PCIe-powered |
| Length | 168mm | — |
| Height | 111mm | — |
| Slots | 1 | — |
| Temp (Load) | 75 | — |
| Perf/Watt | 11.5+72% | 6.7 |
Value Analysis
At launch, the GeForce GT 340 came in at $100, while the Quadro K420 launched at $150. On MSRP, GeForce GT 340 was 33.3% cheaper ($50 less). Performance per dollar on MSRP (G3D Mark / MSRP): 7.4 (GeForce GT 340) vs 4.8 (Quadro K420) — the GeForce GT 340 offers 54.2% better value.
| Feature | GeForce GT 340 | Quadro K420 |
|---|---|---|
| MSRP | $100-33% | $150 |
| Performance per Dollar | 7.4+54% | 4.8 |
| Codename | GK107 | GK104 |
| Release | May 29 2014 | July 22 2014 |
| Ranking | #777 | #475 |
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