GPU Comparison

NVIDIA's Quadro K6000 and RTX 2000 Ada Generation represent two very different eras of workstation graphics. The K6000 is a 2013-era Kepler flagship built for compute density, while the RTX 2000 Ada is a 2024-era Ada Lovelace card designed for efficiency and modern feature support. The benchmark data shows a clear generational divide: the RTX 2000 Ada wins both shared head-to-head tests by wide margins, yet the K6000 still holds its own in aggregate scoring. This comparison breaks down where each card actually makes sense in a modern workload.

Where Each One Wins

The RTX 2000 Ada Generation is the clear winner in raw compute and API-level performance. In the two head-to-head benchmarks available, it dominates the Quadro K6000: it scores 78,074 in Geekbench OpenCL versus the K6000's 23,749, a 69.6% advantage, and 83,360 in Geekbench Vulkan versus 25,409, a 69.5% advantage. These are not marginal gains; they represent a roughly 3.3x performance leap in both compute and graphics workloads. If your work involves modern APIs, ray tracing, or heavy general-purpose GPU compute, the RTX 2000 Ada is the only rational choice between these two.

The Quadro K6000 wins in one specific sense: aggregate benchmark consistency. Its average benchmark score is 19,030, slightly ahead of the RTX 2000 Ada's 18,954. It also edges out the RTX 2000 Ada in their direct rival comparison, with a 0.4% deltaPct advantage. This means that in older or more traditional OpenCL/Vulkan workloads that scale with raw memory bandwidth and shading unit count, the K6000 can still trade blows. The K6000's 12 GB of GDDR5 on a 384-bit bus provides 288.4 GB/s of bandwidth, which is higher than the RTX 2000 Ada's 256.0 GB/s from its 128-bit GDDR6 bus. For memory-bound legacy applications, the K6000's wider bus may keep it competitive.

Architecture Differences

These two cards are from opposite ends of NVIDIA's architectural timeline. The Quadro K6000 uses the GK110B chip on the Kepler architecture, built on TSMC's 28 nm process. It packs 7,080 million transistors into a 561 mm² die, yielding a transistor density of 12.6 million per mm². This is a massive, power-hungry chip designed for maximum throughput in its era. The RTX 2000 Ada uses the AD107 chip on the Ada Lovelace architecture, built on TSMC's 5 nm process. It contains 18,900 million transistors in a 159 mm² die, achieving a transistor density of 118.9 million per mm², nearly 10 times denser than the K6000.

The K6000 has 2,880 shading units, 240 texture mapping units, and 48 ROPs. It has no dedicated ray tracing or tensor cores. Its base clock is 797 MHz with a boost clock of 902 MHz. The RTX 2000 Ada has 2,816 shading units, 88 TMUs, and 48 ROPs, but adds 22 RT cores and 88 tensor cores. Its base clock is 1,620 MHz with a boost clock of 2,130 MHz. The clock speed advantage is massive: the RTX 2000 Ada boosts at more than double the K6000's base clock. This explains why the RTX 2000 Ada achieves 12.00 TFLOPS FP32 performance versus the K6000's 5.196 TFLOPS, despite having fewer shading units.

The RTX 2000 Ada also doubles the FP16 performance at 12.00 TFLOPS (1:1 ratio), while the K6000 has no listed FP16 capability. The RTX 2000 Ada supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the K6000 is limited to DirectX 12 (11_1) and Vulkan 1.2.175. Both support OpenGL 4.6. The K6000 uses PCIe 3.0 x16, while the RTX 2000 Ada uses PCIe 4.0 x8, which offers similar bandwidth in practice. Display outputs differ too: the K6000 has 2x DVI and 2x DisplayPort 1.2, while the RTX 2000 Ada has 4x mini-DisplayPort 1.4a.

FAQ

Q: Which card has more memory bandwidth?

A: The Quadro K6000 has higher memory bandwidth at 288.4 GB/s, thanks to its 384-bit bus and 12 GB of GDDR5. The RTX 2000 Ada has 256.0 GB/s from its 16 GB of GDDR6 on a 128-bit bus.

Q: Does the RTX 2000 Ada support ray tracing?

A: Yes. The RTX 2000 Ada includes 22 RT cores and 88 tensor cores, enabling hardware-accelerated ray tracing and AI workloads. The Quadro K6000 has neither.

Q: Which card is more power-efficient?

A: The RTX 2000 Ada is dramatically more efficient. Its TDP is 70 W with a suggested PSU of 250 W and no power connectors required. The Quadro K6000 has a 225 W TDP, requires 2x 6-pin connectors, and needs a 550 W PSU.

Q: What is the performance difference in Geekbench OpenCL?

A: The RTX 2000 Ada scores 78,074 versus the Quadro K6000's 23,749, a 69.6% advantage for the RTX 2000 Ada.

Q: Which card has a higher aggregate benchmark score?

A: The Quadro K6000 has a slightly higher average benchmark score of 19,030 compared to the RTX 2000 Ada's 18,954, a 0.4% difference.

Q: What is the physical size difference?

A: The Quadro K6000 is 267 mm long and 111 mm tall. The RTX 2000 Ada is 168 mm long and 69 mm tall, significantly shorter and lower-profile.

Specification Differences

| Specification | NVIDIA Quadro K6000 | NVIDIA RTX 2000 Ada Generation |

|---|---|---|

| Architecture | Kepler | Ada Lovelace |

| Process Node | 28 nm | 5 nm |

| Transistors | 7,080 million | 18,900 million |

| Die Size | 561 mm² | 159 mm² |

| Transistor Density | 12.6M / mm² | 118.9M / mm² |

| Base Clock | 797 MHz | 1620 MHz |

| Boost Clock | 902 MHz | 2130 MHz |

| Memory Size | 12 GB GDDR5 | 16 GB GDDR6 |

| Memory Bus | 384 bit | 128 bit |

| Memory Bandwidth | 288.4 GB/s | 256.0 GB/s |

| Shading Units | 2880 | 2816 |

| TMUs | 240 | 88 |

| RT Cores | None | 22 |

| Tensor Cores | None | 88 |

| FP32 Performance | 5.196 TFLOPS | 12.00 TFLOPS |

| FP16 Performance | Not listed | 12.00 TFLOPS (1:1) |

| Pixel Rate | 54.12 GPixel/s | 102.2 GPixel/s |

| Texture Rate | 216.5 GTexel/s | 187.4 GTexel/s |

| TDP | 225 W | 70 W |

| Power Connectors | 2x 6-pin | None |

| Suggested PSU | 550 W | 250 W |

| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |

| Display Outputs | 2x DVI, 2x DisplayPort 1.2 | 4x mini-DisplayPort 1.4a |

| DirectX | 12 (11_1) | 12 Ultimate (12_2) |

| Vulkan | 1.2.175 | 1.4 |

| Length | 267 mm (10.5 inches) | 168 mm (6.6 inches) |

| Height | 111 mm (4.4 inches) | 69 mm (2.7 inches) |

| Production Status | End-of-life | Active |

| Release Date | 2013-07-22 | 2024-02-11 |

| Launch MSRP | 5,265 USD | 649 USD |

Head-to-Head Benchmarks

The two shared benchmarks tell a one-sided story. In Geekbench OpenCL, the RTX 2000 Ada scores 78,074 against the K6000's 23,749. The deltaPct of -69.6% means the K6000 trails by nearly 70%. This is a compute workload that heavily favors the newer architecture's clock speed advantage and tensor core support. The K6000's higher bandwidth cannot compensate for its 797 MHz base clock versus the RTX 2000 Ada's 1,620 MHz base clock.

In Geekbench Vulkan, the gap is similar: the RTX 2000 Ada scores 83,360 versus the K6000's 25,409, a 69.5% deficit for the older card. Vulkan is a modern low-overhead API that leverages the RTX 2000 Ada's DirectX 12 Ultimate feature set and newer driver optimizations. The K6000's Vulkan 1.2.175 support is functional but outdated. These two wins give the RTX 2000 Ada a 2-0 record in head-to-head tests.

Beyond the shared tests, the RTX 2000 Ada has additional benchmark data that reinforces its dominance. It scores 16,927 in Passmark G3D, 7,834 in Passmark GPU Compute, and 1,072 in Passmark G2D. It also shows strong DirectX performance across legacy and modern versions: 216 in Passmark DirectX 9, 138 in DirectX 11, 82 in DirectX 10, and 71 in DirectX 12. The K6000 has no equivalent Passmark data in the fact pack, so these scores stand as additional evidence of the RTX 2000 Ada's versatility.

The aggregate scores are closer than the head-to-heads suggest. The K6000 averages 19,030 across its three benchmarks, while the RTX 2000 Ada averages 18,954 across ten. Both cards sit at the 63rd percentile against all GPUs. The K6000's nearest rivals include the AMD Radeon RX 6600 (19,036, 0% deltaPct) and the NVIDIA Tesla K20m (19,089, -0.3% deltaPct). The RTX 2000 Ada's nearest rivals include the NVIDIA Tesla K80 (18,866, 0.5% deltaPct) and the GeForce RTX 4050 Mobile (19,049, -0.5% deltaPct). This clustering suggests both cards are mid-pack performers in the broader GPU landscape.

The Verdict

The data is unambiguous: the NVIDIA RTX 2000 Ada Generation is the superior card for nearly all modern workloads. It delivers 12.00 TFLOPS of FP32 performance versus the K6000's 5.196 TFLOPS, doubles the FP16 throughput, and adds hardware ray tracing and tensor cores. Its 70 W TDP versus 225 W means it consumes roughly one-third the power, requires no external power connectors, and fits in a much smaller chassis. The 16 GB of GDDR6 memory also exceeds the K6000's 12 GB, even if the bandwidth is slightly lower. For anyone building a new workstation or upgrading from an older Quadro, the RTX 2000 Ada is the obvious pick.

The Quadro K6000's only argument is its aggregate benchmark score and its legacy memory bus. At 19,030 average versus 18,954, it technically outperforms the RTX 2000 Ada in overall average, but this is a 0.4% margin that comes from a smaller benchmark sample set. Its 288.4 GB/s bandwidth is higher than the RTX 2000 Ada's 256.0 GB/s, which may help in specific memory-bound legacy applications. However, the K6000 is end-of-life, uses a 28 nm process, and lacks the feature set required for modern DirectX 12 Ultimate or Vulkan 1.4 workloads. Its launch MSRP was 5,265 USD, making it a premium card in its day, but that day has passed.

Choose the RTX 2000 Ada Generation if you need performance per watt, modern API support, ray tracing, AI acceleration, or a compact form factor. Choose the Quadro K6000 only if you have a specific legacy application that relies on its 384-bit memory bus and you cannot adapt to the RTX 2000 Ada's narrower 128-bit interface, and even then, the 69.6% deficit in OpenCL and 69.5% deficit in Vulkan make that a difficult recommendation. The RTX 2000 Ada wins the head-to-head 2-0, and the specification sheet supports that verdict decisively.