NVIDIA GeForce GT 620M
NVIDIA graphics card specifications and benchmark scores
At a Glance
NVIDIANVIDIA GeForce GT 620M Specifications
GeForce GT 620M GPU Core
Shader units and compute resources
The NVIDIA GeForce GT 620M 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.
GT 620M Clock Speeds
GPU and memory frequencies
Clock speeds directly impact the GeForce GT 620M'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 GeForce GT 620M by NVIDIA dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.
NVIDIA's GeForce GT 620M Memory
VRAM capacity and bandwidth
VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The GeForce GT 620M'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.
GeForce GT 620M by NVIDIA Cache
On-chip cache hierarchy
On-chip cache provides ultra-fast data access for the GT 620M, 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.
GT 620M Theoretical Performance
Compute and fill rates
Theoretical performance metrics provide a baseline for comparing the NVIDIA GeForce GT 620M 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.
Fermi 2.0 Architecture & Process
Manufacturing and design details
The NVIDIA GeForce GT 620M is built on NVIDIA's Fermi 2.0 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 GT 620M will perform in GPU benchmarks compared to previous generations.
NVIDIA's GeForce GT 620M Power & Thermal
TDP and power requirements
Power specifications for the NVIDIA GeForce GT 620M 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 GeForce GT 620M to maintain boost clocks without throttling.
GeForce GT 620M by NVIDIA Physical & Connectivity
Dimensions and outputs
Physical dimensions of the NVIDIA GeForce GT 620M 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 GeForce GT 620M. 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.
GeForce GT 620M Product Information
Release and pricing details
The NVIDIA GeForce GT 620M 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 GeForce GT 620M by NVIDIA represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.
GeForce GT 620M Benchmark Scores
geekbench_openclSource
Geekbench OpenCL tests GPU compute performance using the cross-platform OpenCL API. This shows how NVIDIA GeForce GT 620M handles parallel computing tasks like video encoding and scientific simulations. OpenCL is widely supported across different GPU vendors and platforms.
Top 5 Performers
Top 5 PerformersNearby Performers
Nearby PerformersAbout NVIDIA GeForce GT 620M
The NVIDIA GeForce GT 620M is an entry-level mobile graphics solution from the GeForce 600M generation, built on the Fermi 2.0 architecture using TSMC's 28 nm process. The data shows a chip with 585 million transistors on a 116 mm² die, positioning it as a modest part designed for basic portable computing tasks rather than high-end gaming.
Memory Subsystem
The GT 620M ships with 1024 MB of DDR3 memory across a 64-bit bus interface. This combination yields a memory bandwidth of just 14.40 GB/s, a figure that severely constrains performance in modern workloads. The memory clock runs at 900 MHz, translating to 1800 Mbps effective, which is typical for DDR3 of this era but far below what demanding applications require.
For high-resolution gaming, the implications are stark. The 64-bit bus width creates a fundamental bottleneck: even if the GPU's compute units could render frames faster, the memory subsystem would struggle to feed them data. At 1080p or above, texture streaming and frame buffer operations demand bandwidth in excess of what 14.40 GB/s can provide. Benchmark results confirm this limitation, with the card scoring only 2150 in Geekbench OpenCL, placing it in the 12th percentile of all GPUs. Users attempting 1440p or 4K resolutions would encounter severe stuttering and texture pop-in, as the memory interface simply cannot sustain the data throughput required for high-resolution assets.
How It Compares
The nearest rival data places the GT 620M in a tightly contested group of low-end GPUs, all scoring within a narrow band around 2150. Against the Intel UHD Graphics 770, the GT 620M shows a delta of 0%, meaning the two deliver statistically identical average scores. This is notable because UHD Graphics 770 is an integrated solution found in modern desktop processors, yet it matches a dedicated mobile GPU from an earlier generation.
The Intel HD Graphics 4400 presents a similar picture, with the GT 620M leading by just 0.4% (2150 vs 2142). This margin is negligible in real-world terms, indicating that the Fermi-based mobile chip offers no meaningful advantage over Intel's older integrated graphics. Users upgrading from HD 4400 to the GT 620M would notice virtually no performance difference.
Against the NVIDIA NVS 5200M, the GT 620M holds a 0.6% lead (2150 vs 2138). Both are professional-grade low-power mobile parts, and the near-identical scores suggest they share similar underlying capabilities. The NVS 5400M, however, edges ahead of the GT 620M by 0.6% (2163 vs 2150), showing that even within NVIDIA's own lineup, this chip sits at the bottom of the performance hierarchy. The deltaPct values across all four rivals range from -0.6% to +0.6%, underscoring how indistinguishable these parts are in benchmark terms.
Benchmark Performance
The sole benchmark result available is Geekbench OpenCL, where the GT 620M scores 2150. This places it at the 12th percentile of all GPUs, meaning roughly 88% of tested graphics cards outperform it. The score itself reflects the chip's raw compute capabilities: 96 shading units, 16 texture mapping units, and 8 ROPs, producing 240.0 GFLOPS of FP32 performance. Pixel rate is 2.500 GPixel/s and texture rate is 10.00 GTexel/s, figures that align with its low-end positioning.
Compared to its closest rival, the Intel UHD Graphics 770, the GT 620M is exactly level at 0% delta. This is remarkable given the architectural differences, Fermi 2.0 is a dated design, yet it holds its own against a much newer integrated GPU. The 0.4% advantage over the HD Graphics 4400 and 0.6% over the NVS 5200M are within noise margins, making the GT 620M effectively tied with all three. The NVS 5400M's 0.6% lead is equally marginal. In practical terms, benchmark results indicate the GT 620M offers no competitive edge; it is functionally equivalent to its immediate rivals, all of which cluster within a 1.2% performance band.
FAQ
Q: What is the memory bandwidth of the GT 620M?
A: The GT 620M provides 14.40 GB/s of bandwidth, derived from 1024 MB of DDR3 memory on a 64-bit bus running at 900 MHz (1800 Mbps effective).
Q: How does the GT 620M compare to the Intel UHD Graphics 770?
A: The two GPUs have identical average Geekbench OpenCL scores of 2150, resulting in a 0% deltaPct. Benchmark results show no performance difference between them.
Q: What is the pixel fill rate of this GPU?
A: The GT 620M achieves a pixel rate of 2.500 GPixel/s and a texture rate of 10.00 GTexel/s, based on its 8 ROPs and 16 TMUs.
Q: Does the GT 620M support DirectX 12?
A: The API list indicates DirectX 12 (11_0) support, along with OpenGL 4.6. Vulkan support is not listed.
Q: What is the transistor count and die size?
A: The chip contains 585 million transistors on a 116 mm² die, fabricated on TSMC's 28 nm process, yielding a transistor density of 5.0M per mm².
Q: What generation does the GT 620M belong to?
A: It is part of the GeForce 600M generation, succeeding the GeForce 500M series and preceding the GeForce 700M series. It was released on March 21, 2012, and is now end-of-life.
Ray Tracing and Feature Set
The GT 620M has no dedicated ray tracing cores or tensor cores, as indicated by the null values in the fact pack. This is expected for a Fermi 2.0 architecture part from 2012, which predates hardware-accelerated ray tracing by several generations. The absence of these units means the GPU relies entirely on traditional rasterization techniques for rendering. DirectX 12 (11_0) support is present, though the "11_0" qualifier suggests feature-level parity with DirectX 11 rather than full DirectX 12 capabilities. OpenGL 4.6 is supported, which is surprisingly modern for the chip's age, but Vulkan is not listed, limiting cross-platform graphics API options. The display outputs are marked as "Portable Device Dependent," meaning connectivity varies by laptop manufacturer rather than being standardized. For users interested in ray-traced effects or AI-accelerated features like DLSS, this GPU offers no such functionality, the hardware simply lacks the necessary processing units.
Who Should Consider It
Given its 12th percentile ranking and 2150 Geekbench score, the GT 620M is suitable only for the most basic computing tasks. At 720p resolution with low graphical settings, it might handle older or less demanding titles, but the 14.40 GB/s memory bandwidth and 240.0 GFLOPS compute performance place hard limits on what is achievable. Users targeting 1080p gaming would find the card inadequate, as even the nearest rivals with 0.4–0.6% deltas are themselves low-end parts. The data suggests this GPU is best suited for office productivity, web browsing, and video playback, workloads that do not stress the 3D pipeline. Gamers should look elsewhere, as the benchmark scores indicate performance in the bottom 12% of all GPUs, which translates to unplayable frame rates in most modern titles at any resolution above 720p with reduced settings. For users already owning a system with this GPU, the practical recommendation is to stick to legacy games or indie titles with minimal graphical demands.
Power and Cooling
The GT 620M carries a TDP of just 15 W, making it an extremely power-efficient part. This low thermal design power means a simple cooling solution suffices, the slot width is listed as "IGP," indicating it is designed for integrated or embedded use where dedicated cooling is minimal. The power connectors are listed as "None," so the card draws all its power from the motherboard or laptop's internal power delivery system. No suggested PSU is provided in the fact pack, which is typical for a mobile GPU that does not require an external power supply. The 28 nm process node contributes to the efficiency, allowing 585 million transistors to operate within the 15 W envelope. For laptop manufacturers, this low power draw simplifies thermal design, but it also reflects the chip's modest performance ceiling. Users should not expect any overclocking headroom, as the power delivery and cooling infrastructure are designed for minimal heat output rather than performance maximization. The absence of power connectors and the IGP slot width confirm this is a drop-in solution for thin-and-light notebooks, not a component for gaming laptops or desktop replacements.
The AMD Equivalent of GeForce GT 620M
Looking for a similar graphics card from AMD? The AMD Radeon RX 480 offers comparable performance and features in the AMD lineup.
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