NVIDIA GeForce RTX 3080 Ti vs NVIDIA RTX A1000 Mobile Comparison

NVIDIA's Ampere architecture spans an enormous performance gulf, from the mobile workstation-oriented RTX A1000 Mobile to the desktop-class GeForce RTX 3080 Ti. While both share the same underlying architecture generation and manufacturing process, their benchmark scores and physical specifications place them in entirely different performance tiers. The data shows a decisive victory for the RTX 3080 Ti in every head-to-head comparison, though the RTX A1000 Mobile's efficiency and form factor tell a compelling story for specific professional workloads.

Head-to-Head Benchmarks

The benchmark results are unambiguous. In Geekbench OpenCL, the RTX 3080 Ti scores 170,037 points against the RTX A1000 Mobile's 48,703 points. This represents a delta of -71.4% for the A1000 Mobile, meaning the RTX 3080 Ti is roughly 3.5 times faster in raw compute throughput. The gap widens further in Geekbench Vulkan, where the RTX 3080 Ti achieves 192,697 points versus 46,782 points for the A1000 Mobile — a delta of -75.7%. In Vulkan workloads, the RTX 3080 Ti delivers over four times the performance of the mobile part.

These deltas are not incremental; they reflect fundamentally different silicon. The RTX 3080 Ti's FP32 throughput of 34.10 TFLOPS dwarfs the A1000 Mobile's 4.669 TFLOPS, a 7.3x advantage that directly translates to the OpenCL results. Texture rate tells a similar story: 532.8 GTexel/s versus 72.96 GTexel/s, and pixel rate of 186.5 GPixel/s versus 36.48 GPixel/s. Every throughput metric in the specification sheet favors the desktop card by a factor of seven or more.

The RTX 3080 Ti also dominates in memory bandwidth, with 912.4 GB/s from its GDDR6X memory on a 384-bit bus, compared to the A1000 Mobile's 176.0 GB/s from GDDR6 on a 128-bit bus. That 5.2x bandwidth advantage matters immensely for memory-bound workloads, which likely explains why the Vulkan delta (-75.7%) is even larger than OpenCL (-71.4%). Interestingly, the RTX 3080 Ti's average benchmark score of 41,187 across all tests is lower than its Geekbench scores alone might suggest, while the A1000 Mobile's average of 47,743 is actually higher than its Geekbench OpenCL score — indicating the mobile part performs relatively better across a broader test suite.

Looking at the nearest rivals for context, the RTX A1000 Mobile sits at the 85th percentile of all GPUs, with an average score of 47,743. Its closest competitor is the AMD Radeon RX 6800 XT at 48,477 (1.5% ahead), followed by the AMD Radeon RX 6550M at 46,702 (2.2% behind). The RTX 3080 Ti, conversely, sits at the 83rd percentile with an average score of 41,187, placing it near the AMD Radeon Pro 5300 (40,870, 0.8% behind) and the NVIDIA Tesla M40 24 GB (41,707, 1.2% ahead). The percentile rankings are counterintuitive — the slower card in direct comparison ranks higher overall because the A1000 Mobile's benchmark profile is more consistent, while the RTX 3080 Ti's extremely high Geekbench scores are balanced by lower scores in Passmark tests like DirectX 9 (274), DirectX 10 (184), and G2D (1,091).

The Verdict

The data points to one clear conclusion: for raw performance, the NVIDIA GeForce RTX 3080 Ti is the overwhelming choice. Any workload that benefits from massive FP32 compute, high memory bandwidth, or Vulkan optimization will see 3.5x to 4x better results on the desktop card. The RTX 3080 Ti's 34.10 TFLOPS FP32 and 912.4 GB/s bandwidth are simply in a different class, and its 12 GB of GDDR6X memory provides 3x the capacity of the A1000 Mobile's 4 GB GDDR6.

However, the RTX A1000 Mobile is not without merit. Its 60 W TDP versus the RTX 3080 Ti's 350 W TDP means it consumes 83% less power while delivering roughly 28% of the performance (based on FP32). For mobile workstations where power and thermals are constrained, the A1000 Mobile's IGP form factor and lack of power connectors make it the only viable option — the RTX 3080 Ti requires a dual-slot cooler, a 1x 12-pin power connector, and a 750 W suggested PSU, making it physically incompatible with laptops.

The verdict is situational. If the workload is desktop rendering, deep learning inference, or Vulkan-based applications and power is not a constraint, the RTX 3080 Ti wins by every metric. If the requirement is a portable workstation GPU with 85th-percentile overall performance and minimal power draw, the RTX A1000 Mobile is the appropriate choice — but it should not be selected for performance-critical tasks where the RTX 3080 Ti's 7.3x FP32 advantage matters.

Architecture Differences

Both GPUs are built on NVIDIA's Ampere architecture, manufactured at Samsung's 8 nm process node. The RTX A1000 Mobile uses the GA107 chip, a small die measuring 200 mm² with 8,700 million transistors, yielding a transistor density of 43.5M per mm². The RTX 3080 Ti uses the GA102 chip, a massive die of 628 mm² containing 28,300 million transistors — over three times the transistor count — with a slightly higher density of 45.1M per mm².

The core configuration differences are stark. The RTX 3080 Ti has 10,240 shading units, 320 TMUs, 112 ROPs, 80 RT cores, and 320 tensor cores. The RTX A1000 Mobile has 2,048 shading units, 64 TMUs, 32 ROPs, 16 RT cores, and 64 tensor cores. This means the RTX 3080 Ti has 5x the shading units, 5x the TMUs, 3.5x the ROPs, 5x the RT cores, and 5x the tensor cores. The ray tracing and tensor core counts are particularly relevant for modern workloads: the RTX 3080 Ti can handle far more concurrent ray tracing operations and AI-accelerated tasks.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level features are identical. The FP16 to FP32 ratio is 1:1 on both chips, meaning they process half-precision and single-precision math at the same rate — a notable characteristic of Ampere's design. The memory subsystems differ fundamentally: the A1000 Mobile uses GDDR6 while the RTX 3080 Ti uses GDDR6X, and the memory clock speeds reflect this — 1,375 MHz (11 Gbps effective) versus 1,188 MHz (19 Gbps effective). Despite the lower clock, the RTX 3080 Ti's wider 384-bit bus delivers 5.2x more bandwidth.

Specification Differences

The most significant specification differences are in memory and power. The RTX 3080 Ti has 12 GB of GDDR6X on a 384-bit bus with 912.4 GB/s bandwidth; the RTX A1000 Mobile has 4 GB of GDDR6 on a 128-bit bus with 176.0 GB/s bandwidth. Memory capacity difference is 3x, and bandwidth difference is 5.2x.

Clock speeds favor the RTX 3080 Ti substantially: base clock of 1,365 MHz versus 630 MHz, and boost clock of 1,665 MHz versus 1,140 MHz. The RTX 3080 Ti's FP32 performance of 34.10 TFLOPS is 7.3x the A1000 Mobile's 4.669 TFLOPS. Texture rate is 532.8 GTexel/s versus 72.96 GTexel/s, and pixel rate is 186.5 GPixel/s versus 36.48 GPixel/s.

Power consumption is the most dramatic difference: 350 W TDP for the RTX 3080 Ti versus 60 W for the A1000 Mobile. The physical form factor follows — the RTX 3080 Ti is a dual-slot card measuring 285 mm (11.2 inches) in length, 112 mm (4.4 inches) in height, and 40 mm (1.6 inches) in width, requiring a 1x 12-pin power connector and a 750 W suggested PSU. The A1000 Mobile is an IGP (integrated graphics processor) with no power connectors and portable-device-dependent display outputs. The RTX 3080 Ti offers 1x HDMI 2.1 and 3x DisplayPort 1.4a outputs. The bus interface also differs: PCIe 4.0 x16 for the RTX 3080 Ti versus PCIe 4.0 x8 for the A1000 Mobile.

The RTX 3080 Ti has a launch MSRP of 1,199 USD and was released on May 30, 2021, while the A1000 Mobile was released on March 29, 2022, with no official launch MSRP listed. Both are end-of-life products.

FAQ

Q: Which GPU is faster in Geekbench OpenCL?

A: The NVIDIA GeForce RTX 3080 Ti scores 170,037 points versus the RTX A1000 Mobile's 48,703 points, representing a -71.4% delta for the A1000 Mobile. The RTX 3080 Ti is approximately 3.5x faster in this benchmark.

Q: Does the RTX A1000 Mobile have any performance advantage in the head-to-head tests?

A: No. The RTX 3080 Ti wins both head-to-head benchmarks — Geekbench OpenCL and Geekbench Vulkan — with 0 wins for the A1000 Mobile and 2 wins for the RTX 3080 Ti.

Q: How do their memory bandwidths compare?

A: The RTX 3080 Ti has 912.4 GB/s bandwidth from 12 GB of GDDR6X on a 384-bit bus. The RTX A1000 Mobile has 176.0 GB/s from 4 GB of GDDR6 on a 128-bit bus. The RTX 3080 Ti offers 5.2x more bandwidth.

Q: What is the power consumption difference?

A: The RTX A1000 Mobile has a 60 W TDP, while the RTX 3080 Ti has a 350 W TDP. The RTX 3080 Ti consumes 5.8x more power, and it requires a 750 W suggested PSU plus a 1x 12-pin power connector.

Q: Which GPU has better ray tracing capabilities?

A: The RTX 3080 Ti has 80 RT cores versus 16 RT cores on the RTX A1000 Mobile — a 5x difference. Both support DirectX 12 Ultimate, which includes ray tracing features.

Q: How do their overall benchmark percentiles compare?

A: The RTX A1000 Mobile sits at the 85th percentile of all GPUs with an average benchmark score of 47,743. The RTX 3080 Ti sits at the 83rd percentile with an average score of 41,187, despite winning every head-to-head comparison.