AMD Radeon HD 6950 vs NVIDIA T600 Comparison

NVIDIA T600 and AMD Radeon HD 6950 represent two very different eras of GPU design, separated by more than a decade of architectural evolution. The T600 is a modern professional workstation card built on the Turing architecture, while the HD 6950 is a legacy enthusiast part from the TeraScale 3 generation. The recorded benchmark data shows a decisive advantage for the newer card, but the comparison reveals meaningful insights about how GPU compute and rendering workloads have shifted over time.

Head-to-Head Benchmarks

The only direct benchmark comparison available in the database is the Geekbench OpenCL test, and the results are stark. The NVIDIA T600 scores 27,875 points, while the AMD Radeon HD 6950 manages 6,210 points. That works out to a 348.9% advantage for the T600, meaning the newer card delivers roughly 4.5 times the compute throughput in this particular workload. This is not a marginal generational improvement; it is a complete overhaul in processing capability.

The T600's OpenCL result is consistent with its overall average benchmark score of 7,035, which places it in the 39th percentile of all GPUs. Its nearest rivals in the database, based on average score, include the NVIDIA GeForce GTX 680M at 7,023 (0.2% slower), the AMD Radeon R5 M240 at 6,975 (0.9% slower), and the NVIDIA GeForce GTX 675M at 6,946 (1.3% slower). Interestingly, the NVIDIA GeForce GTX 970 sits slightly above at 7,157, making the T600 1.7% slower than that card. These figures indicate that the T600, despite its professional workstation branding, performs in the same ballpark as mid-range gaming GPUs from a few years prior, but it crushes the HD 6950 specifically.

The AMD Radeon HD 6950, by contrast, has an average benchmark score of 6,210 and sits in the 36th percentile of all GPUs. Its nearest rivals include the AMD FirePro W600 at 6,223 (0.2% faster), the NVIDIA GeForce RTX 4070 Ti SUPER AD102 at 6,270 (0.9% faster), and the NVIDIA Quadro K620 at 6,282 (1.1% faster). The presence of these modern and powerful cards in its immediate vicinity is misleading; the HD 6950's average is dragged down by having only a single benchmark result, whereas the T600 has nine separate scores across multiple test suites.

The T600 also wins the head-to-head count, taking 1 win and 0 losses. The HD 6950 has no wins in any recorded comparison. This asymmetry is partly due to the limited benchmark coverage for the older card, but the OpenCL result alone establishes a clear hierarchy.

Architecture Differences

The two GPUs are built on fundamentally different architectural philosophies. The NVIDIA T600 uses the TU117 chip, designed on the Turing architecture, and fabricated on a 12 nm process at TSMC. It contains 4,700 million transistors on a die size of 200 mm², yielding a transistor density of 23.5 million per square millimeter. The AMD Radeon HD 6950 uses the Cayman chip, based on the TeraScale 3 architecture, and is fabricated on a much older 40 nm process, also at TSMC. It packs 2,640 million transistors onto a significantly larger die of 389 mm², resulting in a much lower transistor density of 6.8 million per square millimeter.

This density difference is the core story. The T600 fits nearly twice as many transistors into roughly half the silicon area, which explains why it can deliver dramatically higher performance while consuming only a fraction of the power. The process node advantage alone accounts for a substantial portion of the performance gap, but the architectural changes compound it.

In terms of compute resources, the HD 6950 actually has more raw shading units: 1,408 versus the T600's 640. It also has more texture mapping units (88 versus 40) and an identical number of render output units (32 on both). However, the T600's newer architecture allows each shader to do more work per clock, and its clock speeds are far higher. The T600 runs at a base clock of 735 MHz with a boost clock of 1,335 MHz, while the HD 6950's base and boost clocks are not recorded in the database. The T600 also supports FP16 computation at a 2:1 ratio, delivering 3.418 TFLOPS of half-precision performance, while the HD 6950 has no recorded FP16 capability.

Memory configurations also differ significantly. The T600 comes with 4 GB of GDDR6 memory on a 128-bit bus, running at 1,250 MHz with an effective data rate of 10 Gbps, yielding 160.0 GB/s of bandwidth. The HD 6950 has 2 GB of GDDR5 memory on a wider 256-bit bus, also running at 1,250 MHz but with an effective data rate of 5 Gbps, which also produces 160.0 GB/s of bandwidth. So the bandwidth is identical, but the T600 achieves it with half the bus width, thanks to faster memory technology. The T600 also has twice the memory capacity, which is a substantial advantage for modern workloads that exceed 2 GB.

The TDP figures are where the architectures diverge most dramatically. The T600 draws just 40 W and requires no external power connectors, with a suggested power supply of 200 W. The HD 6950, by contrast, has a TDP of 200 W, requires two 6-pin power connectors, and suggests a 550 W power supply. This is a five-fold difference in power consumption, and it directly impacts the thermal and physical design of each card.

Physical design also differs. The T600 is a single-slot card with four mini-DisplayPort 1.4a outputs. The HD 6950 is a dual-slot card measuring 286 mm in length, 126 mm in height, and 42 mm in width, with a mix of two DVI ports, one HDMI 1.4a port, and two mini-DisplayPort 1.2 outputs. The HD 6950 is a much larger and more power-hungry piece of hardware.

API support follows the generational split. The T600 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The HD 6950 is limited to DirectX 11.2 (11_0) and OpenGL 4.4, with no Vulkan support recorded. This means the T600 is compatible with modern rendering pipelines and compute APIs, while the HD 6950 is effectively locked out of newer software development.

Where Each One Wins

The T600 wins in every measurable category where data exists. Its OpenCL score is 348.9% higher than the HD 6950, its FP32 throughput of 1.709 TFLOPS is lower than the HD 6950's 2.253 TFLOPS on paper, yet the real-world compute results favor the T600 heavily. This discrepancy suggests that the T600's architecture is far more efficient at executing parallel workloads, despite having fewer shaders and lower nominal FP32 peak.

The T600's advantage is most pronounced in compute-heavy applications, as evidenced by its Geekbench OpenCL result. Its Passmark G3D score of 6,479 and Passmark GPU Compute score of 2,402 further indicate solid rendering and compute performance. The HD 6950 has no recorded Passmark results, so its performance in those specific tests cannot be compared directly, but its single OpenCL score is far below the T600's.

For legacy DirectX 9 and DirectX 10 applications, the T600 still holds up, with Passmark DirectX 9 scores of 114 and DirectX 10 scores of 32. The HD 6950's lack of recorded scores in these categories means the T600 is the only card with verified data. The HD 6950 does have a higher theoretical texture rate (70.40 GTexel/s versus 53.40 GTexel/s) and a higher FP32 peak (2.253 TFLOPS versus 1.709 TFLOPS), but these raw specifications do not translate into benchmark wins.

The HD 6950's only potential advantages are its wider 256-bit memory bus and higher TMU count, which could theoretically help in texture-bound workloads from its era. However, with no benchmark data to support this, the database cannot confirm any real-world scenario where the HD 6950 outperforms the T600.

The Verdict

The data is unambiguous: the NVIDIA T600 is the superior GPU in every recorded benchmark. Its 348.9% OpenCL advantage over the AMD Radeon HD 6950 is decisive, and its higher average benchmark score (7,035 versus 6,210) places it in a higher percentile bracket (39th versus 36th). The T600 also offers better memory capacity (4 GB versus 2 GB), lower power consumption (40 W versus 200 W), and modern API support (DirectX 12, Vulkan 1.4) that the HD 6950 lacks entirely.

The HD 6950's legacy status is its primary limitation. Released in the Northern Islands generation with a 40 nm process and TeraScale 3 architecture, it cannot keep pace with even a low-power modern workstation card. Its theoretical peak FP32 of 2.253 TFLOPS exceeds the T600's 1.709 TFLOPS, but this does not translate into a single benchmark victory. The architecture is simply too old to efficiently execute modern compute workloads.

For users choosing between these two cards, the T600 is the only rational pick for any contemporary application. Its combination of low power draw, high compute performance, and broad API support makes it suitable for professional workstation tasks, light rendering, and compute workloads. The HD 6950, while historically significant, is only relevant for retro systems or legacy software that requires its specific feature set, and even then, its 200 W TDP and dual-slot design make it a less practical choice.

The T600's launch MSRP was 299 USD, which is worth noting for context, but the performance gap alone justifies its selection.

FAQ

Q: How much faster is the NVIDIA T600 than the AMD Radeon HD 6950 in OpenCL compute?

A: The T600 scores 27,875 in Geekbench OpenCL, while the HD 6950 scores 6,210, giving the T600 a 348.9% advantage.

Q: Which card has more memory bandwidth?

A: Both cards have identical memory bandwidth of 160.0 GB/s, but the T600 achieves this with a 128-bit GDDR6 interface, while the HD 6950 uses a 256-bit GDDR5 interface.

Q: Is the AMD Radeon HD 6950 more powerful in raw FP32 throughput?

A: Yes, on paper the HD 6950 has a higher FP32 peak of 2.253 TFLOPS versus the T600's 1.709 TFLOPS, but this does not result in any benchmark win for the older card.

Q: Does the AMD Radeon HD 6950 support modern APIs?

A: No, the HD 6950 only supports DirectX 11.2 and OpenGL 4.4, with no Vulkan support, while the T600 supports DirectX 12, OpenGL 4.6, and Vulkan 1.4.

Q: What is the power consumption difference between the two cards?

A: The T600 has a TDP of 40 W with no external power connectors and a suggested 200 W power supply, while the HD 6950 has a TDP of 200 W, requires two 6-pin connectors, and suggests a 550 W power supply.

Q: How do these cards compare in overall benchmark average?

A: The T600 has an average benchmark score of 7,035 across nine tests, placing it in the 39th percentile, while the HD 6950 has an average of 6,210 from a single test, placing it in the 36th percentile.