NVIDIA Quadro K620M
NVIDIA graphics card specifications and benchmark scores
At a Glance
NVIDIANVIDIA Quadro K620M Specifications
GPU Core
Shader units and compute resources
The NVIDIA Quadro K620M GPU core specifications define its raw processing power for graphics and compute workloads. Shading units (also called CUDA cores, stream processors, or execution units depending on manufacturer) handle the parallel calculations required for rendering. TMUs (Texture Mapping Units) process texture data, while ROPs (Render Output Units) handle final pixel output. Higher shader counts generally translate to better GPU benchmark performance, especially in demanding games and 3D applications.
Quadro K620M Clock Speeds
GPU and memory frequencies
Clock speeds directly impact the Quadro K620M's performance in GPU benchmarks and real-world gaming. The base clock represents the minimum guaranteed frequency, while the boost clock indicates peak performance under optimal thermal conditions. Memory clock speed affects texture loading and frame buffer operations. The Quadro K620M by NVIDIA dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.
NVIDIA's Quadro K620M Memory
VRAM capacity and bandwidth
VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Quadro K620M's memory capacity determines how well it handles high-resolution textures and multiple displays. Memory bandwidth, measured in GB/s, affects how quickly data moves between the GPU and VRAM. Higher bandwidth improves performance in memory-intensive scenarios like 4K gaming. The memory bus width and type (GDDR6, GDDR6X, HBM) significantly influence overall GPU benchmark scores.
Quadro K620M by NVIDIA Cache
On-chip cache hierarchy
On-chip cache provides ultra-fast data access for the Quadro K620M, reducing the need to fetch data from slower VRAM. L1 and L2 caches store frequently accessed data close to the compute units. AMD's Infinity Cache (L3) dramatically increases effective bandwidth, improving GPU benchmark performance without requiring wider memory buses. Larger cache sizes help maintain high frame rates in memory-bound scenarios and reduce power consumption by minimizing VRAM accesses.
Quadro K620M Theoretical Performance
Compute and fill rates
Theoretical performance metrics provide a baseline for comparing the NVIDIA Quadro K620M against other graphics cards. FP32 (single-precision) performance, measured in TFLOPS, indicates compute capability for gaming and general GPU workloads. FP64 (double-precision) matters for scientific computing. Pixel and texture fill rates determine how quickly the GPU can render complex scenes. While real-world GPU benchmark results depend on many factors, these specifications help predict relative performance levels.
Maxwell Architecture & Process
Manufacturing and design details
The NVIDIA Quadro K620M is built on NVIDIA's Maxwell architecture, which defines how the GPU processes graphics and compute workloads. The manufacturing process node affects power efficiency, thermal characteristics, and maximum clock speeds. Smaller process nodes pack more transistors into the same die area, enabling higher performance per watt. Understanding the architecture helps predict how the Quadro K620M will perform in GPU benchmarks compared to previous generations.
Power & Thermal
TDP and power requirements
Power specifications for the NVIDIA Quadro K620M determine PSU requirements and thermal management needs. TDP (Thermal Design Power) indicates the heat output under typical loads, guiding cooler selection. Power connector requirements ensure adequate power delivery for stable operation during demanding GPU benchmarks. The suggested PSU wattage accounts for the entire system, not just the graphics card. Efficient power delivery enables the Quadro K620M to maintain boost clocks without throttling.
Quadro K620M by NVIDIA Physical & Connectivity
Dimensions and outputs
Physical dimensions of the NVIDIA Quadro K620M are critical for case compatibility. Card length, height, and slot width determine whether it fits in your chassis. The PCIe interface version affects bandwidth for communication with the CPU. Display outputs define monitor connectivity options, with modern cards supporting multiple high-resolution displays simultaneously. Verify these specifications against your case and motherboard before purchasing to ensure a proper fit.
NVIDIA API Support
Graphics and compute APIs
API support determines which games and applications can fully utilize the NVIDIA Quadro K620M. DirectX 12 Ultimate enables advanced features like ray tracing and variable rate shading. Vulkan provides cross-platform graphics capabilities with low-level hardware access. OpenGL remains important for professional applications and older games. CUDA (NVIDIA) and OpenCL enable GPU compute for video editing, 3D rendering, and scientific applications. Higher API versions unlock newer graphical features in GPU benchmarks and games.
Quadro K620M Product Information
Release and pricing details
The NVIDIA Quadro K620M is manufactured by NVIDIA as part of their graphics card lineup. Release date and launch pricing provide context for comparing GPU benchmark results with competing products from the same era. Understanding the product lifecycle helps evaluate whether the Quadro K620M by NVIDIA represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.
About NVIDIA Quadro K620M
The NVIDIA Quadro K620M is a mobile workstation GPU built on the Maxwell architecture, fabricated on TSMC's 28 nm process with 1,020 million transistors on a 77 mm² die. In the Geekbench OpenCL benchmark, it scores 5,957 points, placing it in the 33rd percentile of all GPUs. Its four nearest rivals—two AMD Radeon parts, an AMD FirePro, and an older Quadro—cluster within a 0.7% performance band, making this a tightly contested entry-level segment. The following analysis breaks down its compute performance, feature set, power characteristics, and competitive positioning.
Benchmark Performance
The Quadro K620M delivers a Geekbench OpenCL score of 5,957. This places it at the 33rd percentile of all GPUs, meaning it outperforms roughly one-third of the hardware in the database. The score itself is derived from a single OpenCL workload, reflecting compute capability rather than gaming or professional rendering performance. The FP32 throughput of 863.2 GFLOPS and texture rate of 17.98 GTexel/s are consistent with a low-power, entry-level part. The pixel rate of 8.992 GPixel/s, driven by 8 ROPs, further underscores its modest fill-rate ceiling.
When compared directly to its nearest rivals, the deltas are minuscule. The AMD Radeon HD 8750M scores 5,946, which is 0.2% lower than the Quadro. The AMD Radeon HD 8730M and AMD FirePro W4100 score 5,970 and 5,972 respectively, each 0.2% higher than the Quadro. The NVIDIA Quadro K4000M leads the group with 5,986, a 0.5% advantage. These differences are well below the threshold of perceptible performance variation in real-world applications. The Quadro K620M's memory configuration—2 GB of DDR3 on a 64-bit bus, yielding 16.02 GB/s of bandwidth—further limits its ability to differentiate itself in bandwidth-sensitive tasks. The effective memory clock of 2 Gbps is modest, and the bus width is narrow, but for the intended workload class (basic workstation graphics, 2D CAD, and light compute), the bandwidth is adequate.
The 33rd percentile ranking is a clear indicator of the GPU's market position. It is not designed to compete with high-end mobile workstations or desktop parts; instead, it sits at the bottom of the performance ladder, just above integrated graphics. The tiny deltas against its rivals suggest that any of these GPUs would be interchangeable in practice, with the Quadro's specific strengths lying in driver optimizations and feature set rather than raw compute.
Ray Tracing and Feature Set
The Quadro K620M does not include dedicated ray tracing cores or tensor cores. The specification lists neither, and the Maxwell architecture predates NVIDIA's RTX technology by several years. Consequently, hardware-accelerated ray tracing is unavailable; any ray tracing workloads would have to be processed through compute shaders, which is inefficient given the FP32 throughput of 863.2 GFLOPS. Similarly, the absence of tensor cores means no AI-accelerated features such as DLSS or other machine-learning-based enhancements are supported. This places the Quadro K620M firmly in the pre-RTX era, where rendering relied on traditional rasterization.
On the API front, the GPU supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The DirectX 12 support is limited to feature level 11_0, which covers the core API but omits higher-tier features like mesh shaders or variable-rate shading that appear in later feature levels. OpenGL 4.6 and Vulkan 1.4 provide modern cross-platform compatibility, though the underlying hardware's compute power will constrain performance in demanding workloads. The shading unit count is 384, with 16 texture mapping units and 8 ROPs. These numbers align with the GPU's entry-level classification. The pixel rate of 8.992 GPixel/s and texture rate of 17.98 GTexel/s are derived from the clock speeds and unit counts, and they represent the maximum theoretical fill rates.
The chip itself, codenamed GM108S, is a small die measuring 77 mm² with a transistor density of 13.2 million per mm². This density is typical for a 28 nm process, which was mature by the time of the GPU's release. The architecture is Maxwell, a direct successor to the Kepler line, and the GPU's generation is listed as "Quadro Kepler-M (Kx200M)" in the database, though the underlying architecture is definitively Maxwell. This naming discrepancy does not affect performance metrics.
Power and Cooling
The Quadro K620M has a TDP of 30 W, which is exceptionally low for a discrete GPU. This low power envelope allows for passive cooling in many laptop designs, or a small active fan. The GPU uses no power connectors; it draws all power from the MXM slot, which is a standardized module interface for mobile workstations. The slot width is listed as MXM Module, and the bus interface is MXM-A (3.0). This form factor is designed for portability, and the display outputs are described as "Portable Device Dependent," meaning they vary by the host laptop's design. There is no suggested PSU specification because the GPU is not a desktop component; power delivery is handled by the laptop's internal power supply.
The core clock runs at 1029 MHz base and 1124 MHz boost, while the memory clock is 1001 MHz (2 Gbps effective). These clocks are modest, but they are balanced against the low TDP. The memory type is DDR3, which is older and less power-efficient than GDDR5, but again, the target market is entry-level professional use. The combination of a 30 W TDP and no auxiliary power connector means that system integrators have flexibility in thermal design, potentially enabling thin and light chassis. The production status is end-of-life, with a release date of 2015-02-28, indicating that this GPU is now obsolete in the marketplace.
FAQ
Q: What is the Geekbench OpenCL score of the NVIDIA Quadro K620M?
A: It scores 5,957 points, placing it in the 33rd percentile of all GPUs.
Q: Does the Quadro K620M support hardware ray tracing?
A: No. The specification does not list any ray tracing cores, and the Maxwell architecture predates NVIDIA's RTX line, so ray tracing must be handled via compute shaders.
Q: What APIs are supported?
A: It supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4.
Q: How much memory bandwidth does it have?
A: The 2 GB DDR3 memory is connected via a 64-bit bus, providing 16.02 GB/s of bandwidth.
Q: What is the transistor count and die size?
A: The chip contains 1,020 million transistors on a 77 mm² die, fabricated on TSMC's 28 nm process.
Q: Is the Quadro K620M still in production?
A: No, it is marked as end-of-life, with a release date of 2015-02-28.
How It Compares
AMD Radeon HD 8750M: The Quadro K620M is 0.2% ahead of this AMD part in the Geekbench OpenCL test (5,957 vs. 5,946). The margin is negligible, meaning the two GPUs offer effectively identical compute performance for entry-level mobile tasks.
AMD Radeon HD 8730M: Here the Quadro trails by 0.2% (5,957 vs. 5,970). Again, a sub-1% difference that will not be noticeable in any practical workload. Both parts are aimed at the same segment.
AMD FirePro W4100: The FirePro W4100 scores 5,972, 0.2% higher than the Quadro. This workstation-oriented competitor is essentially a peer in this benchmark, though the Quadro may have different driver optimizations for professional applications.
NVIDIA Quadro K4000M: The older Quadro K4000M leads by 0.5% (5,986 vs. 5,957). Despite being the largest gap among the listed rivals, it is still within a rounding error of the K620M's performance. The K4000M is a previous-generation part, so the K620M's near-parity shows the incremental nature of performance gains in this class.
All four rivals sit within a 0.7% performance band of the Quadro K620M, underscoring its position as a mid-pack entry-level mobile GPU. The 33rd percentile ranking further confirms that this part is not intended for high-end workloads but rather for basic professional graphics tasks where stability and driver support matter more than raw speed.
Detailed benchmark scores and charts for the NVIDIA Quadro K620M are below.
Benchmark Scores
geekbench_openclSource
Geekbench OpenCL tests GPU compute performance using the cross-platform OpenCL API. This shows how NVIDIA Quadro K620M handles parallel computing tasks like video encoding and scientific simulations. OpenCL is widely supported across different GPU vendors and platforms.
Top 5 Performers
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