NVIDIA CMP 40HX vs NVIDIA GeForce RTX 5080 Comparison

Head-to-Head Benchmarks

The benchmark data shows a decisive victory for the NVIDIA GeForce RTX 5080 in every recorded comparison. Across the two shared tests, the RTX 5080 wins both, leaving the NVIDIA CMP 40HX without a single head-to-head victory. The most striking gap appears in the Geekbench Vulkan test, where the RTX 5080 scores 255450 against the CMP 40HX’s 77879, a 69.5 percent deficit for the older card. In OpenCL, the margin is similarly lopsided: the RTX 5080 posts 235901 while the CMP 40HX manages 93395, a 60.4 percent difference. These are not marginal leads; they represent generational leaps in raw compute throughput.

Looking at the broader database picture, the CMP 40HX holds a percentile rank of 93 among all GPUs, which places it above the RTX 5080’s 87th percentile. This seems counterintuitive given the head-to-head results, but the explanation lies in the benchmark pool. The CMP 40HX’s average benchmark score of 85637 is buoyed by its two recorded tests, both of which are compute-oriented workloads. The RTX 5080’s average of 56083 is dragged down by a much larger test suite that includes low-level DirectX and 2D tests, which are not representative of its peak capability. The Geekbench OpenCL and Vulkan scores, however, are the direct comparison points, and they tell a unambiguous story: the RTX 5080 is roughly two and a half times faster in OpenCL and more than three times faster in Vulkan.

The nearest rival data reinforces the CMP 40HX’s standing among its contemporaries. It sits 1.7 percent behind the AMD Radeon PRO W7600, 2.1 percent behind the NVIDIA Quadro GP100, and 4.4 percent ahead of the AMD Radeon PRO W6600. For the RTX 5080, the nearest rivals are a different class: it is 0.6 percent ahead of the AMD Radeon 8060S, 0.7 percent ahead of the AMD Radeon RX 6750 GRE 12 GB, and 2.3 percent ahead of the AMD Radeon Pro W5700X. These deltas show that while the RTX 5080 competes with modern mid-range and upper-mid-range cards, the CMP 40HX is positioned against professional workstation GPUs from a previous era.

Where Each One Wins

The CMP 40HX wins in one specific niche: compute-oriented legacy workloads where its Turing architecture and dedicated mining focus still deliver respectable results. Its Geekbench OpenCL score of 93395 places it within striking distance of cards like the AMD Radeon PRO W7600 and NVIDIA Quadro GP100, and it outperforms the AMD Radeon PRO W6600 by 4.4 percent. In pure compute tasks that scale well with its 2304 shading units and 288 tensor cores, the CMP 40HX remains a capable performer for its age. It also holds an advantage in power efficiency relative to raw compute: its 185 W TDP is substantially lower than the RTX 5080’s 360 W, and its 7.603 TFLOPS FP32 output comes at a fraction of the newer card’s power draw.

The RTX 5080 wins everywhere else. Its Geekbench scores are not just higher; they are in a different tier. The Vulkan result of 255450 nearly triples the CMP 40HX’s 77879, and the OpenCL result of 235901 more than doubles the older card’s 93395. In gaming and modern graphics workloads, the RTX 5080’s 56.28 TFLOPS FP32 throughput, 84 RT cores, and 336 tensor cores provide the architectural muscle for real-time ray tracing and AI-accelerated features that the CMP 40HX cannot approach. The CMP 40HX has no display outputs, making it unsuitable for any interactive use case. The RTX 5080, with 1x HDMI 2.1b and 3x DisplayPort 2.1b, is built for visual output. The data is clear: the CMP 40HX is a specialized compute tool, while the RTX 5080 is a general-purpose graphics processor.

Architecture Differences

The two GPUs come from entirely different architectural lineages. The CMP 40HX uses the TU106 chip based on Turing architecture, built on a 12 nm process at TSMC. The RTX 5080 uses the GB203 chip based on Blackwell 2.0 architecture, also fabricated by TSMC but on a 5 nm node. This process shrink is the foundation of the performance gap: the RTX 5080 packs 45,600 million transistors into a 378 mm² die, resulting in a transistor density of 120.6 million per square millimeter. The CMP 40HX has 10,800 million transistors on a 445 mm² die, for a density of 24.3 million per square millimeter. The newer chip crams more than four times the transistors into a smaller physical area.

The memory subsystems also reflect this generational divide. The CMP 40HX uses 8 GB of GDDR6 on a 256-bit bus, delivering 448.0 GB/s of bandwidth. The RTX 5080 doubles the capacity to 16 GB of GDDR7 on the same 256-bit bus, but the bandwidth jumps to 960.0 GB/s, more than double. The effective memory clock tells the same story: 14 Gbps for the CMP 40HX versus 30 Gbps for the RTX 5080. This bandwidth advantage is critical for the RTX 5080’s higher shading throughput, as its texture rate of 879.3 GTexel/s and pixel rate of 293.1 GPixel/s dwarf the CMP 40HX’s 237.6 GTexel/s and 105.6 GPixel/s.

Compute resources scale accordingly. The RTX 5080 has 10752 shading units, 336 TMUs, and 112 ROPs, versus the CMP 40HX’s 2304 shading units, 144 TMUs, and 64 ROPs. Ray tracing hardware jumps from 36 RT cores to 84, and tensor cores from 288 to 336. The FP32 throughput is 56.28 TFLOPS for the RTX 5080 versus 7.603 TFLOPS for the CMP 40HX, a sevenfold increase. FP16 performance is also notable: the RTX 5080 achieves 56.28 TFLOPS at a 1:1 ratio, while the CMP 40HX manages 15.21 TFLOPS at a 2:1 ratio, meaning the newer card’s FP16 output is nearly four times higher.

The CMP 40HX was released on February 24, 2021, and is now end-of-life, while the RTX 5080 launched on January 29, 2025, and remains active. The CMP 40HX belongs to NVIDIA’s Mining GPUs generation, a product line stripped of display outputs for cryptocurrency workloads. The RTX 5080 is part of the GeForce 50-series, with a full suite of display connectivity and consumer-facing features. The bus interface also differs: the CMP 40HX uses PCIe 1.0 x4, a severely limited connection, while the RTX 5080 uses PCIe 5.0 x16, providing a much wider data path to the host system.

Specification Differences

The two cards differ in nearly every measurable specification. The RTX 5080 has a larger memory pool (16 GB versus 8 GB) and a faster memory type (GDDR7 versus GDDR6). Its boost clock is 2617 MHz versus 1650 MHz, and its base clock is 2295 MHz versus 1470 MHz. The RTX 5080’s TDP is 360 W, compared to 185 W for the CMP 40HX, and it requires a 16-pin power connector versus the CMP 40HX’s 8-pin. The suggested PSU is 750 W versus 450 W. The RTX 5080 is physically larger: 304 mm long, 137 mm high, and 40 mm wide, versus 229 mm, 111 mm, and 35 mm. Both are dual-slot cards.

The display outputs are a fundamental split. The CMP 40HX has no outputs, while the RTX 5080 offers 1x HDMI 2.1b and 3x DisplayPort 2.1b. The production status is active for the RTX 5080 and end-of-life for the CMP 40HX. The launch MSRP for the CMP 40HX was 699 USD, and for the RTX 5080 it was 999 USD. The RTX 5080’s predecessor is the GeForce 40 series, with a successor in the GeForce 60 series, while the CMP 40HX has no recorded predecessor or successor. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is not a differentiator.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA CMP 40HX has an average benchmark score of 85637, while the NVIDIA GeForce RTX 5080 has an average of 56083. However, the RTX 5080’s average is based on a larger and more varied test suite, and in their shared Geekbench tests, the RTX 5080 wins decisively.

Q: What is the performance gap in the Geekbench Vulkan test?

A: The RTX 5080 scores 255450, while the CMP 40HX scores 77879. This is a 69.5 percent difference in favor of the RTX 5080.

Q: Does the CMP 40HX support display output?

A: No, the CMP 40HX has no display outputs. It was designed for mining workloads. The RTX 5080 has 1x HDMI 2.1b and 3x DisplayPort 2.1b.

Q: How does the memory bandwidth compare?

A: The CMP 40HX has 8 GB of GDDR6 with 448.0 GB/s bandwidth, while the RTX 5080 has 16 GB of GDDR7 with 960.0 GB/s bandwidth. Both use a 256-bit bus.

Q: Which GPU has more shading units?

A: The RTX 5080 has 10752 shading units, versus 2304 for the CMP 40HX. The RTX 5080 also has more TMUs (336 versus 144) and ROPs (112 versus 64).

Q: What are the power requirements?

A: The CMP 40HX has a TDP of 185 W and a suggested PSU of 450 W. The RTX 5080 has a TDP of 360 W and a suggested PSU of 750 W.

The Verdict

The data is unambiguous: the NVIDIA GeForce RTX 5080 is the superior performer in every head-to-head benchmark recorded. Its Geekbench OpenCL and Vulkan scores are more than double and nearly triple those of the NVIDIA CMP 40HX, respectively. Anyone needing modern compute performance, ray tracing, or display output should choose the RTX 5080. Its 16 GB of GDDR7 memory, 960.0 GB/s bandwidth, and 84 RT cores make it a versatile card for gaming, content creation, and AI workloads.

The CMP 40HX is a specialized relic. Its 8 GB of GDDR6 and 448.0 GB/s bandwidth are sufficient for its intended mining use case, and its 93rd percentile rank among all GPUs shows it was a strong performer in its day. But with no display outputs, a PCIe 1.0 x4 interface, and end-of-life status, it has no place in a modern system for interactive use. The RTX 5080’s active production status, PCIe 5.0 x16 interface, and full connectivity make it the only logical choice for any current build. The verdict is straightforward: the RTX 5080 wins outright, and the CMP 40HX should be left to the history books.