GeForce 7800 GT vs Quadro K420
Aggregate performance score
We've compared Quadro K420 with GeForce 7800 GT, including specs and performance data.
K420 outperforms 7800 GT by a whopping 206% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 901 | 1190 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.08 | no data |
| Power efficiency | 3.28 | 0.68 |
| Architecture | Kepler (2012−2018) | Curie (2003−2013) |
| GPU code name | GK107 | G70 |
| Market segment | Workstation | Desktop |
| Release date | 22 July 2014 (10 years ago) | 11 August 2005 (19 years ago) |
| Launch price (MSRP) | $96.67 | $449 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
Quadro K420 and 7800 GT have a nearly equal value for money.
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 192 | no data |
| Core clock speed | 876 MHz | 400 MHz |
| Number of transistors | 1,270 million | 302 million |
| Manufacturing process technology | 28 nm | 110 nm |
| Power consumption (TDP) | 41 Watt | 65 Watt |
| Texture fill rate | 14.02 | 8.000 |
| Floating-point processing power | 0.3364 TFLOPS | no data |
| ROPs | 16 | 16 |
| TMUs | 16 | 20 |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Interface | PCIe 2.0 x16 | PCIe 1.0 x16 |
| Length | 160 mm | 226 mm |
| Width | 1" (2.5 cm) | 1-slot |
| Supplementary power connectors | None | 1x 6-pin |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | 128 Bit | GDDR3 |
| Maximum RAM amount | 1 GB/2 GB | 256 MB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 891 MHz | 500 MHz |
| Memory bandwidth | Up to 29 GB/s | 32 GB/s |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DVI, 1x DisplayPort | 2x DVI, 1x S-Video |
| Number of simultaneous displays | 4 | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Vision Pro | + | no data |
| Mosaic | + | no data |
| nView Desktop Management | + | no data |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 | 9.0c (9_3) |
| Shader Model | 5.1 | 3.0 |
| OpenGL | 4.5 | 2.1 |
| OpenCL | 1.2 | N/A |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.0 | - |
Synthetic benchmark performance
Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 1.93 | 0.63 |
| Recency | 22 July 2014 | 11 August 2005 |
| Maximum RAM amount | 1 GB/2 GB | 256 MB |
| Chip lithography | 28 nm | 110 nm |
| Power consumption (TDP) | 41 Watt | 65 Watt |
Quadro K420 has a 206.3% higher aggregate performance score, an age advantage of 8 years, a 300% higher maximum VRAM amount, a 292.9% more advanced lithography process, and 58.5% lower power consumption.
The Quadro K420 is our recommended choice as it beats the GeForce 7800 GT in performance tests.
Be aware that Quadro K420 is a workstation graphics card while GeForce 7800 GT is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
