GEFORCE

NVIDIA GeForce GTX 660 OEM

NVIDIA graphics card specifications and benchmark scores

1.5 GB
VRAM
888
MHz Boost
130W
TDP
192
Bus Width

NVIDIA GeForce GTX 660 OEM Specifications

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GeForce GTX 660 OEM GPU Core

Shader units and compute resources

The NVIDIA GeForce GTX 660 OEM 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.

Shading Units
1,152
Shaders
1,152
TMUs
96
ROPs
24
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GTX 660 OEM Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the GeForce GTX 660 OEM'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 GTX 660 OEM by NVIDIA dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

Base Clock
823 MHz
Base Clock
823 MHz
Boost Clock
888 MHz
Boost Clock
888 MHz
Memory Clock
1400 MHz 5.6 Gbps effective
GDDR GDDR 6X 6X

NVIDIA's GeForce GTX 660 OEM Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The GeForce GTX 660 OEM'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.

Memory Size
1536 MB
VRAM
1,536 MB
Memory Type
GDDR5
VRAM Type
GDDR5
Memory Bus
192 bit
Bus Width
192-bit
Bandwidth
134.4 GB/s
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GeForce GTX 660 OEM by NVIDIA Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the GTX 660 OEM, 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.

L1 Cache
16 KB (per SMX)
L2 Cache
384 KB
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GTX 660 OEM Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the NVIDIA GeForce GTX 660 OEM 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.

FP32 (Float)
2.046 TFLOPS
FP64 (Double)
85.25 GFLOPS (1:24)
Pixel Rate
21.31 GPixel/s
Texture Rate
85.25 GTexel/s
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Kepler Architecture & Process

Manufacturing and design details

The NVIDIA GeForce GTX 660 OEM is built on NVIDIA's Kepler 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 GTX 660 OEM will perform in GPU benchmarks compared to previous generations.

Architecture
Kepler
GPU Name
GK104
Process Node
28 nm
Foundry
TSMC
Transistors
3,540 million
Die Size
294 mm²
Density
12.0M / mm²
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NVIDIA's GeForce GTX 660 OEM Power & Thermal

TDP and power requirements

Power specifications for the NVIDIA GeForce GTX 660 OEM 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 GTX 660 OEM to maintain boost clocks without throttling.

TDP
130 W
TDP
130W
Power Connectors
1x 6-pin
Suggested PSU
300 W
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GeForce GTX 660 OEM by NVIDIA Physical & Connectivity

Dimensions and outputs

Physical dimensions of the NVIDIA GeForce GTX 660 OEM 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.

Slot Width
Dual-slot
Length
241 mm 9.5 inches
Bus Interface
PCIe 3.0 x16
Display Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Display Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
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NVIDIA API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the NVIDIA GeForce GTX 660 OEM. 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.

DirectX
12 (11_0)
DirectX
12 (11_0)
OpenGL
4.6
OpenGL
4.6
Vulkan
1.2.175
Vulkan
1.2.175
OpenCL
3.0
CUDA
3.0
Shader Model
6.5 (5.1)
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GeForce GTX 660 OEM Product Information

Release and pricing details

The NVIDIA GeForce GTX 660 OEM 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 GTX 660 OEM by NVIDIA represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.

Manufacturer
NVIDIA
Release Date
Aug 2012
Production
End-of-life
Predecessor
GeForce 500
Successor
GeForce 700

GeForce GTX 660 OEM Benchmark Scores

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No benchmark data available for this GPU.

About NVIDIA GeForce GTX 660 OEM

The NVIDIA GeForce GTX 660 OEM remains a viable option for professionals seeking a balance between cost and compute power. Its 1.5 GB of GDDR5 memory provides enough bandwidth for medium‑scale data sets in CAD and GIS applications. Built on the 28 nm Kepler architecture, the card delivers a predictable performance envelope that aligns with legacy workstation pipelines. The 823 MHz base clock and 888 MHz boost clock ensure that compute kernels stay within the 130 W TDP envelope, reducing thermal concerns in dense rack environments. Although it lacks the raw CUDA core count of newer generations, the GTX 660’s efficiency makes it suitable for batch rendering farms that prioritize energy consumption. Its PCIe 3.0 x16 interface guarantees sufficient throughput for most professional workloads without bottlenecking the system bus.

In 3D rendering scenarios, the card’s 960 CUDA cores can sustain interactive viewport rates in software such as Blender and 3ds Max. The GDDR5 memory operates at 5 Gbps, delivering a peak bandwidth of roughly 96 GB/s, which is adequate for texture streaming at 1080p resolutions. When rendering with GPU‑accelerated engines like Cycles, the GTX 660 can complete test frames up to 30 % faster than integrated graphics solutions of the same era. Its modest power draw allows studios to populate multiple units per workstation without exceeding typical PSU limits. The Kepler driver stack includes support for OpenGL 4.5 and DirectX 11, ensuring compatibility with most modern rendering pipelines. While it does not natively support hardware‑accelerated ray tracing, the card can still leverage software‑based denoising techniques to achieve acceptable visual fidelity. Overall, the card offers a data‑driven performance profile that scales predictably with scene complexity.

Software compatibility is a cornerstone of the GTX 660’s enterprise appeal, as NVIDIA’s driver updates are synchronized with major professional applications. Certified drivers for AutoCAD, SolidWorks, and CATIA have been released, providing stable OpenGL and CUDA pathways for simulation and analysis tasks. The card’s support for Compute Capability 3.0 enables developers to port existing CUDA kernels with minimal code changes. In environments where virtual desktop infrastructure (VDI) is deployed, the GPU can be shared across multiple sessions using NVIDIA GRID Lite, extending its utility beyond a single workstation. The OEM variant includes a low‑profile PCB, making it suitable for compact workstations that still demand full‑size GPU capabilities. For data‑intensive workloads, the 1.5 GB VRAM can be a limiting factor, but careful asset management and streaming strategies mitigate this constraint.

Enterprise features of the GeForce GTX 660 focus on reliability and manageability within corporate IT policies. The card supports NVIDIA’s GPU Boost technology, which dynamically adjusts clock speeds to maintain performance within the 130 W thermal design power envelope. Its 28 nm process node contributes to a lower failure rate compared to older 40 nm designs, reducing downtime in mission‑critical settings. The inclusion of hardware‑based ECC is absent, but the card’s error‑checking utilities can be integrated into monitoring suites like NVIDIA‑SMI for proactive health checks. Compatibility with standard PCIe 3.0 x16 slots ensures seamless integration into existing server chassis without firmware modifications. Although the GTX 660 does not feature dedicated display outputs for multi‑monitor walls, its dual‑link DVI and HDMI ports suffice for typical office visualization tasks.

The AMD Equivalent of GeForce GTX 660 OEM

Looking for a similar graphics card from AMD? The AMD Radeon RX 480 offers comparable performance and features in the AMD lineup.

AMD Radeon RX 480

AMD • 8 GB VRAM

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