NVIDIA RTX PRO 6000 Blackwell vs NVIDIA T400 Comparison

Head-to-Head Benchmarks

The benchmark data paints a remarkably close picture between these two radically different NVIDIA workstation cards, despite their vast internal differences. The NVIDIA T400 posts an average benchmark score of 16,508, while the NVIDIA RTX PRO 6000 Blackwell trails narrowly at 16,408, a difference of just 0.6% in the T400’s favor. This places the T400 at the 60th percentile among all GPUs, with the RTX PRO 6000 Blackwell at the 59th percentile — a statistical dead heat.

Digging into the specific tests, the T400’s results come from Geekbench workloads. It scores 17,039 in Geekbench OpenCL and 15,976 in Geekbench Vulkan. The RTX PRO 6000 Blackwell’s sole benchmark entry is 3DMark Steel Nomad DX12, where it scores 16,408. These are different test suites measuring different aspects of performance, so the comparison is not apples-to-apples, but the aggregate numbers land both cards within a hair of each other in the database’s averaging.

Turning to the nearest rivals list for the T400, the data shows it essentially tied with the NVIDIA GeForce RTX 5090 D V2, which averages 16,504 (0% delta). The T400 edges the AMD Radeon PRO W7500 (16,415, 0.6% behind) and the AMD Radeon RX 5700 XT (16,361, 0.9% behind). On the RTX PRO 6000 Blackwell side, its nearest rival is the AMD Radeon PRO W7500 at 16,415, with the RTX PRO 6000 Blackwell trailing by 0%. The AMD Radeon RX 5700 XT sits 0.3% behind the Blackwell card, and the AMD Radeon Pro 5600M is 0.4% behind. Interestingly, the NVIDIA GeForce RTX 5090 D V2 posts a delta of -0.6%, meaning the RTX PRO 6000 Blackwell is ahead of that particular GeForce card by that margin.

The most striking headline is that the T400, with its modest 384 shading units and 2 GB of memory, out-scores the RTX PRO 6000 Blackwell, which packs 24,064 shading units and 96 GB of memory. The benchmark database averages these disparate workloads into composite scores, and in that composite, the older, smaller Turing card comes out on top. That said, the margin is razor-thin — 100 points out of roughly 16,500 — and falls well within typical run-to-run variance for synthetic benchmarks.

The Verdict

Who should pick which? The data answers this strictly through benchmark scores and architectural context. For users whose workloads mirror Geekbench OpenCL and Vulkan tests — typically compute-oriented tasks, rendering, and general GPU-accelerated applications — the NVIDIA T400 delivers a composite score that is 0.6% higher than the RTX PRO 6000 Blackwell. The T400 also holds a higher percentile ranking (60th vs. 59th), making it the nominal performance leader in this database’s aggregate view.

However, the RTX PRO 6000 Blackwell is the newer, active product, released on 2025-03-17, while the T400 is end-of-life, having debuted on 2021-05-05. The RTX PRO 6000 Blackwell carries a launch MSRP of 8,565 USD. The T400 has no listed launch MSRP. From a pure benchmark-score perspective, neither card has a decisive edge — the delta is 0.6% either way depending on which rival list you consult. The T400’s nearest rival comparison shows it 0.6% ahead of the RTX PRO 6000 Blackwell, while the RTX PRO 6000 Blackwell’s own rival list shows it 0.6% behind the NVIDIA GeForce RTX 5090 D V2.

The practical verdict hinges on workload fit. The T400 is a 30 W single-slot card with 2 GB GDDR6 on a 64-bit bus, suited to lightweight professional display and entry-level compute. The RTX PRO 6000 Blackwell is a 600 W dual-slot behemoth with 96 GB GDDR7 on a 512-bit bus, 188 RT cores, and 752 tensor cores — clearly aimed at massive AI, ray-traced, and data-science workloads. The benchmark database’s composite score does not differentiate these use cases; it simply averages what tests exist. For users running the specific workloads captured in these benchmarks, the T400 wins by a hair. For users whose work scales with memory capacity, ray tracing, and tensor throughput, the benchmark data is insufficient to declare a winner — the scores are too close and the test suites too divergent.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA T400 has an average benchmark score of 16,508, which is 100 points higher than the NVIDIA RTX PRO 6000 Blackwell’s 16,408 — a 0.6% advantage for the T400.

Q: How do the two cards compare in percentile ranking?

A: The T400 sits at the 60th percentile among all GPUs, while the RTX PRO 6000 Blackwell sits at the 59th percentile, a one-percentile difference favoring the T400.

Q: What specific benchmark tests are recorded for each card?

A: The T400 has two Geekbench results: 17,039 in OpenCL and 15,976 in Vulkan. The RTX PRO 6000 Blackwell has one result: 16,408 in 3DMark Steel Nomad DX12.

Q: Which card has a larger memory capacity?

A: The RTX PRO 6000 Blackwell has 96 GB of GDDR7 memory, while the T400 has 2 GB of GDDR6 memory — a 48-fold difference in capacity.

Q: What is the production status of each card?

A: The T400 is end-of-life, while the RTX PRO 6000 Blackwell is active and currently in production.

Q: Are the two cards close in performance to other GPUs in the database?

A: Yes. The T400 is tied with the NVIDIA GeForce RTX 5090 D V2 (16,504, 0% delta) and is 0.6% ahead of the AMD Radeon PRO W7500. The RTX PRO 6000 Blackwell is 0% behind the AMD Radeon PRO W7500 and 0.6% ahead of the NVIDIA GeForce RTX 5090 D V2.

Specification Differences

The two cards differ across nearly every specification field. The T400 uses a 64-bit memory bus with 2 GB GDDR6 and 80.00 GB/s bandwidth; the RTX PRO 6000 Blackwell uses a 512-bit bus with 96 GB GDDR7 and 1.79 TB/s bandwidth. The T400’s base clock is 420 MHz with a boost of 1425 MHz; the RTX PRO 6000 Blackwell runs at 1590 MHz base and 2617 MHz boost. Memory clocks differ as well: the T400 operates at 1250 MHz (10 Gbps effective), while the RTX PRO 6000 Blackwell runs at 1750 MHz (28 Gbps effective).

Compute resources diverge sharply. The T400 has 384 shading units, 24 TMUs, and 16 ROPs; the RTX PRO 6000 Blackwell has 24,064 shading units, 752 TMUs, and 192 ROPs. The RTX PRO 6000 Blackwell also features 188 RT cores and 752 tensor cores, while the T400 has none of either. Pixel rate is 22.80 GPixel/s for the T400 versus 502.5 GPixel/s for the RTX PRO 6000 Blackwell. Texture rates are 34.20 GTexel/s and 1,968.0 GTexel/s, respectively. FP32 throughput is 1,094.4 GFLOPS for the T400 versus 126.0 TFLOPS for the RTX PRO 6000 Blackwell. FP16 performance is 2.189 TFLOPS (2:1) versus 126.0 TFLOPS (1:1).

Power and physical dimensions also differ drastically. The T400 has a 30 W TDP, single-slot width, and no power connectors; the RTX PRO 6000 Blackwell has a 600 W TDP, dual-slot width, and a 1x 16-pin connector. Suggested PSU is 200 W for the T400 and 1000 W for the RTX PRO 6000 Blackwell. The T400 is PCIe 3.0 x16; the RTX PRO 6000 Blackwell is PCIe 5.0 x16. Display outputs: the T400 has 3x mini-DisplayPort 1.4a; the RTX PRO 6000 Blackwell has 4x DisplayPort 2.1b. The RTX PRO 6000 Blackwell’s dimensions are 304 mm x 137 mm x 40 mm; the T400 has no listed dimensions.

Architecture Differences

The architectural gap is generational and fundamental. The T400 is built on the Turing architecture (chip TU117) using a 12 nm process at TSMC, with 4,700 million transistors on a 200 mm² die, yielding a transistor density of 23.5M / mm². The RTX PRO 6000 Blackwell uses the Blackwell 2.0 architecture (chip GB202) on a 5 nm process, also at TSMC, with 92,200 million transistors on a 750 mm² die — a transistor density of 122.9M / mm². That is over 19 times more transistors and more than 5 times the density per square millimeter.

The T400 belongs to the Quadro Turing generation (Tx000), while the RTX PRO 6000 Blackwell belongs to the Blackwell PRO W generation (x000). The T400’s predecessor is Quadro Volta, and its successor is Workstation Ampere. The RTX PRO 6000 Blackwell’s predecessor is Workstation Ada, and it has no successor listed.

API support differs: the T400 supports DirectX 12 (12_1), while the RTX PRO 6000 Blackwell supports DirectX 12 Ultimate (12_2). Both support OpenGL 4.6 and Vulkan 1.4. The RTX PRO 6000 Blackwell adds dedicated ray tracing (188 RT cores) and tensor cores (752) — hardware the T400 lacks entirely. The T400’s FP16 runs at a 2:1 ratio relative to FP32, while the RTX PRO 6000 Blackwell runs FP16 at a 1:1 ratio, meaning its FP16 throughput equals its FP32 throughput at 126.0 TFLOPS. The T400’s FP32 is 1,094.4 GFLOPS, and its FP16 is 2.189 TFLOPS. These architectural differences explain why the RTX PRO 6000 Blackwell is a 600 W, dual-slot, active product with a 96 GB framebuffer, while the T400 is a 30 W, single-slot, end-of-life card with 2 GB — yet the benchmark composite scores remain nearly identical, illustrating how workload-specific these synthetic tests are.