NVIDIA GeForce GTX 650 vs NVIDIA Quadro K2000 Comparison

The NVIDIA Quadro K2000 and NVIDIA GeForce GTX 650 are both 28 nm Kepler parts, but the data shows they are not interchangeable. The Quadro K2000’s average benchmark score of 3964 places it in the 24th percentile of all GPUs, while the GTX 650’s 3823 average lands in the 22nd percentile. The K2000 wins the Geekbench Metal test decisively, while the GTX 650 takes both OpenCL and Vulkan tests. The verdict is straightforward: the K2000 is the pick for Metal-centric workloads, while the GTX 650 is the stronger all-around compute performer in the other two APIs. The K2000 also carries a $599 launch MSRP, a fact worth noting given its narrower compute advantage.

The Verdict

The data points to a split decision based on the API in question. For users running Metal applications, the Quadro K2000 is the clear choice, as it leads the GTX 650 by 51.3% in the Geekbench Metal test. That is a massive margin, and it is the single largest performance gap between the two cards. Conversely, for OpenCL or Vulkan workloads, the GTX 650 is superior, delivering 10.4% and 7.4% higher scores, respectively. The K2000’s average benchmark score of 3964 is 3.7% higher than the GTX 650’s 3823, but that edge is entirely driven by its Metal dominance. The GTX 650 wins two of the three head-to-head tests, making it the more consistent performer across the broader benchmark set. If a user’s software stack is Metal-heavy, the K2000 is worth its premium; otherwise, the GTX 650 offers better compute performance in the other two tested APIs.

Architecture Differences

Both cards share the Kepler architecture and a 28 nm process node from TSMC, but their underlying chips differ significantly. The Quadro K2000 uses the GK107 chip, which contains 1,270 million transistors on a 118 mm² die, resulting in a transistor density of 10.8M per mm². The GeForce GTX 650, by contrast, uses the GK106 chip, which packs 2,540 million transistors onto a 221 mm² die, yielding a higher density of 11.5M per mm². That means the GTX 650 has exactly double the transistor count of the K2000, a substantial architectural disparity. However, both cards feature identical core configurations: 384 shading units, 32 texture mapping units, and 16 raster operation units. The memory subsystems differ as well, with the K2000 offering 2 GB of GDDR5 on a 128-bit bus at 1000 MHz (4 Gbps effective), producing 64.00 GB/s of bandwidth. The GTX 650 has half the capacity at 1024 MB, but runs its GDDR5 at 1250 MHz (5 Gbps effective) on the same 128-bit bus, yielding 80.00 GB/s of bandwidth, which is 25% higher. The GTX 650 also features a faster PCIe 3.0 x16 interface, while the K2000 is limited to PCIe 2.0 x16. Power requirements diverge: the K2000 has a 51 W TDP and requires no power connectors, while the GTX 650 draws 65 W and needs a single 6-pin connector. Both cards are single-slot, support DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175, and share the same display outputs of 1x DVI and 2x DisplayPort 1.2.

Head-to-Head Benchmarks

The head-to-head results reveal a clear split. In Geekbench Metal, the Quadro K2000 scores 3630 against the GTX 650’s 2400, a 51.3% advantage for the K2000. This is the single biggest win for either card and suggests the K2000’s driver or hardware optimizations are heavily skewed toward Apple’s Metal API. The GTX 650 strikes back in Geekbench OpenCL, scoring 4545 versus the K2000’s 4071, a 10.4% margin. That result is notable because the K2000’s higher average benchmark score (3964 vs 3823) is almost entirely due to its Metal performance; without it, the GTX 650 would be ahead. In Geekbench Vulkan, the GTX 650 again takes the lead, scoring 4524 against 4191, a 7.4% edge. The GTX 650’s Vulkan score of 4524 is also its second-highest result, just 21 points below its OpenCL score, indicating strong cross-API consistency. The K2000’s Vulkan score of 4191 is its best result, but it still trails the GTX 650. The wins tally is 1 for the K2000 and 2 for the GTX 650, and the deltas are lopsided: the K2000’s Metal win is five times larger than the GTX 650’s OpenCL advantage. This suggests the K2000 is a specialized tool, while the GTX 650 is the more balanced compute performer.

FAQ

Q: Which card has the higher average benchmark score?

A: The NVIDIA Quadro K2000 has an average benchmark score of 3964, which is 3.7% higher than the GeForce GTX 650’s 3823.

Q: How much faster is the Quadro K2000 in Metal performance?

A: The K2000 scores 3630 in Geekbench Metal, which is 51.3% higher than the GTX 650’s 2400.

Q: Does the GeForce GTX 650 win any benchmark tests?

A: Yes, the GTX 650 wins Geekbench OpenCL with a score of 4545 (10.4% ahead) and Geekbench Vulkan with a score of 4524 (7.4% ahead).

Q: What are the memory capacities of the two cards?

A: The Quadro K2000 has 2 GB of GDDR5 memory, while the GeForce GTX 650 has 1024 MB (1 GB) of GDDR5 memory.

Q: Do both cards use the same GPU architecture?

A: Yes, both are based on the Kepler architecture and are manufactured on a 28 nm process by TSMC.

Q: Which card has higher memory bandwidth?

A: The GeForce GTX 650 has 80.00 GB/s of bandwidth, compared to the Quadro K2000’s 64.00 GB/s.

Where Each One Wins

The Quadro K2000 is the undisputed winner in Metal-based scenarios. Its 51.3% lead in Geekbench Metal is the largest margin in the entire comparison, and it is the sole reason the K2000’s average score is higher. For users running macOS or other Metal-centric applications, the K2000’s 3630 score versus the GTX 650’s 2400 is a decisive advantage that outweighs its losses elsewhere. The K2000 also offers double the memory capacity (2 GB vs 1024 MB), which could benefit workloads with larger data sets, even if the bandwidth is lower at 64.00 GB/s. Its lower 51 W TDP and lack of power connectors make it easier to integrate into power-constrained systems, though both cards share a 250 W suggested PSU.

The GeForce GTX 650 wins in OpenCL and Vulkan, which are more common across general-purpose compute and gaming APIs. Its OpenCL score of 4545 is 10.4% higher than the K2000’s 4071, and its Vulkan score of 4524 is 7.4% higher than the K2000’s 4191. The GTX 650 also has 25% more memory bandwidth (80.00 GB/s vs 64.00 GB/s), which contributes to its higher pixel rate of 8.464 GPixel/s and texture rate of 33.86 GTexel/s, versus the K2000’s 7.632 GPixel/s and 30.53 GTexel/s. Its FP32 throughput of 812.5 GFLOPS also beats the K2000’s 732.7 GFLOPS. The GTX 650 has double the transistor count (2,540 million vs 1,270 million), a larger die (221 mm² vs 118 mm²), and a faster PCIe 3.0 x16 interface. For users prioritizing OpenCL or Vulkan compute, the GTX 650 is the better choice, and its shorter 147 mm length (5.8 inches) makes it more compact than the K2000’s 202 mm (8 inches). The GTX 650’s higher 65 W TDP and 1x 6-pin power connector are the trade-offs for its performance edge.