NVIDIA GeForce RTX 4080 Mobile vs NVIDIA GeForce RTX 5090 SE Comparison

Head-to-Head Benchmarks

The database contains no overlapping benchmark submissions for the NVIDIA GeForce RTX 4080 Mobile and the NVIDIA GeForce RTX 5090 SE. The RTX 4080 Mobile has a full suite of recorded results across Geekbench and Passmark tests, while the RTX 5090 SE has no scores logged in any of the same test categories. Consequently, a direct score-by-score comparison cannot be constructed from the available data. The RTX 4080 Mobile's average benchmark score is 38,135, placing it in the 81st percentile among all GPUs in the database. Its nearest rivals include the NVIDIA GeForce MX570 at an average score of 38,299 (0.4% ahead), the NVIDIA GeForce RTX 5080 Mobile at 38,349 (0.6% ahead), the NVIDIA GeForce RTX 4070 at 37,648 (1.3% behind), and the NVIDIA Tesla P4 at 37,628 (1.3% behind). These figures indicate that the RTX 4080 Mobile sits very close to a cluster of similarly performing parts, with the largest recorded gap among its nearest rivals being only 1.9 percentage points between the RTX 5080 Mobile and the Tesla P4.

For the RTX 5090 SE, the absence of benchmark data means the database records an average score of zero, a 50th percentile ranking, and no nearest rivals. Any head-to-head numerical analysis between the two cards is therefore impossible at this time. The RTX 4080 Mobile's individual test results provide a reference point for its own capabilities: it scores 159,575 in Geekbench OpenCL, 145,807 in Geekbench Vulkan, 24,926 in Passmark G3D, 11,191 in Passmark GPU Compute, and lower scores in legacy DirectX tests (157 in DirectX 10, 244 in DirectX 11, 96 in DirectX 12, 286 in DirectX 9) and Passmark G2D at 929. These numbers establish the RTX 4080 Mobile as a mid-to-high tier mobile part, but they cannot be extrapolated to predict RTX 5090 SE performance without recorded measurements.

Architecture Differences

The two GPUs represent distinct generations and architectures. The RTX 4080 Mobile uses the AD104 chip based on Ada Lovelace architecture, while the RTX 5090 SE uses the GB202 chip based on Blackwell 2.0 architecture. Both are manufactured by TSMC on a 5 nm process node, with transistor densities that are nearly identical: 121.8 million transistors per square millimeter for the AD104 and 122.9 million per square millimeter for the GB202. The transistor counts differ substantially, however. The AD104 contains 35,800 million transistors on a 294 mm² die, whereas the GB202 packs 92,200 million transistors across a 750 mm² die. The RTX 5090 SE's die is more than twice the area and holds roughly 2.6 times the transistor count of the mobile chip.

The shading and compute resources scale accordingly. The RTX 4080 Mobile has 7,424 shading units, 232 texture mapping units, 80 raster output units, 58 ray tracing cores, and 232 tensor cores. The RTX 5090 SE nearly doubles these figures: 14,080 shading units, 440 TMUs, 160 ROPs, 110 RT cores, and 440 tensor cores. Clock speeds also differ markedly. The RTX 4080 Mobile runs at a base clock of 1,290 MHz and a boost clock of 1,665 MHz, while the RTX 5090 SE operates at 1,740 MHz base and 2,377 MHz boost. The RTX 5090 SE's boost clock is 712 MHz higher than the mobile part's boost, a difference that compounds with the larger shader count to produce a much higher peak throughput.

The memory subsystems are in different classes. The RTX 4080 Mobile uses 12 GB of GDDR6 memory on a 192-bit bus with memory clocked at 2,250 MHz (18 Gbps effective), yielding a bandwidth of 432.0 GB/s. The RTX 5090 SE uses 24 GB of GDDR7 memory on a 384-bit bus at 1,750 MHz (28 Gbps effective), delivering 1.34 TB/s of bandwidth. That is more than three times the raw bandwidth of the mobile part. The bus interface also differs: PCIe 4.0 x16 for the RTX 4080 Mobile versus PCIe 5.0 x16 for the RTX 5090 SE.

Where Each One Wins

Based on the recorded data, the RTX 4080 Mobile wins in portability and power efficiency. It is an IGP-class slot width device with no power connectors and a TDP of 110 W, whereas the RTX 5090 SE is a dual-slot card requiring a 1x 16-pin connector and a 500 W TDP, with a suggested power supply of 900 W. The RTX 4080 Mobile's dimensions are not recorded in the database, but its IGP form factor and lack of external power connectors indicate it is designed for laptops. The RTX 5090 SE has physical dimensions of 267 mm length, 111 mm height, and 40 mm width, making it a large desktop card.

The RTX 5090 SE wins in raw compute capacity, memory capacity, and bandwidth. Its FP32 throughput is 66.94 TFLOPS versus 24.72 TFLOPS for the RTX 4080 Mobile, and its FP16 throughput is similarly 66.94 TFLOPS (1:1 ratio) versus 24.72 TFLOPS (1:1). The texture rate is 1,045.9 GTexel/s compared to 386.3 GTexel/s, and the pixel rate is 380.3 GPixel/s versus 133.2 GPixel/s. The RTX 5090 SE doubles the memory capacity to 24 GB and uses a newer GDDR7 type, while the RTX 4080 Mobile is limited to 12 GB of GDDR6.

In benchmark coverage, the RTX 4080 Mobile has results across nine tests, while the RTX 5090 SE has none. This gives the RTX 4080 Mobile a practical advantage in the database's current state: it can be compared against other GPUs, whereas the RTX 5090 SE cannot. The RTX 5090 SE's percentile ranking of 50 is a placeholder value based on zero recorded scores, not a meaningful performance position.

Specification Differences

The two cards differ across nearly every specification field in the database. The process node and foundry are the same (5 nm, TSMC), but the chip, architecture, and generation differ: AD104 / Ada Lovelace / GeForce 40 Mobile for the RTX 4080 Mobile versus GB202 / Blackwell 2.0 / GeForce 50 for the RTX 5090 SE. Transistor count is 35,800 million versus 92,200 million, die size is 294 mm² versus 750 mm², and transistor density is 121.8M / mm² versus 122.9M / mm².

Clock speeds differ in both base and boost. The RTX 4080 Mobile has a base clock of 1,290 MHz and boost of 1,665 MHz; the RTX 5090 SE has 1,740 MHz base and 2,377 MHz boost. Memory clock is 2,250 MHz (18 Gbps effective) versus 1,750 MHz (28 Gbps effective). Memory size is 12 GB GDDR6 versus 24 GB GDDR7, with bus widths of 192 bit versus 384 bit and bandwidth of 432.0 GB/s versus 1.34 TB/s.

Compute resources differ across the board: shading units 7,424 versus 14,080, TMUs 232 versus 440, ROPs 80 versus 160, RT cores 58 versus 110, tensor cores 232 versus 440. Pixel rate is 133.2 GPixel/s versus 380.3 GPixel/s, texture rate is 386.3 GTexel/s versus 1,045.9 GTexel/s, FP32 is 24.72 TFLOPS versus 66.94 TFLOPS, and FP16 is 24.72 TFLOPS versus 66.94 TFLOPS, both with 1:1 ratios.

Power and physical specifications diverge sharply. The RTX 4080 Mobile has a TDP of 110 W, IGP slot width, no power connectors, and no recorded dimensions. The RTX 5090 SE has a TDP of 500 W, dual-slot width, a 1x 16-pin power connector, a suggested PSU of 900 W, and dimensions of 267 mm by 111 mm by 40 mm. The bus interface is PCIe 4.0 x16 for the mobile part and PCIe 5.0 x16 for the desktop part. Display outputs are listed as "Portable Device Dependent" for the RTX 4080 Mobile versus "1x HDMI 2.1b3x DisplayPort 2.1b" for the RTX 5090 SE.

The API support is identical: both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Release dates differ, with the RTX 4080 Mobile dated 2023-01-02 and the RTX 5090 SE dated 2025-12-31. The RTX 4080 Mobile's predecessor is GeForce 30 Mobile and its successor is GeForce 50 Mobile; the RTX 5090 SE's predecessor is GeForce 40 and its successor is GeForce 60. The RTX 5090 SE has a launch MSRP of 1,499 USD. The RTX 4080 Mobile has no recorded launch MSRP. Both are listed as Active in production status. The RTX 4080 Mobile has a recorded average benchmark score of 38,135 and percentile of 81, while the RTX 5090 SE has an average of 0 and percentile of 50. The RTX 5090 SE reports no dimensions for length in its own entry, but the database lists its physical size as 267 mm length, 111 mm height, and 40 mm width.

FAQ

Q: What is the difference in memory capacity between the two GPUs?

A: The RTX 4080 Mobile has 12 GB of GDDR6 memory on a 192-bit bus, while the RTX 5090 SE has 24 GB of GDDR7 memory on a 384-bit bus.

Q: How do the clock speeds compare?

A: The RTX 4080 Mobile runs at 1,290 MHz base and 1,665 MHz boost. The RTX 5090 SE runs at 1,740 MHz base and 2,377 MHz boost.

Q: Are there any benchmark scores for the RTX 5090 SE in the database?

A: No. The RTX 5090 SE has an empty benchmark list, an average score of 0, and no nearest rivals. The RTX 4080 Mobile has nine recorded scores across Geekbench and Passmark tests.

Q: What is the TDP of each card?

A: The RTX 4080 Mobile has a TDP of 110 W, while the RTX 5090 SE has a TDP of 500 W and a suggested power supply of 900 W.

Q: How do the transistor counts compare?

A: The RTX 4080 Mobile uses an AD104 chip with 35,800 million transistors on a 294 mm² die. The RTX 5090 SE uses a GB202 chip with 92,200 million transistors on a 750 mm² die.

Q: What are the physical form factor differences?

A: The RTX 4080 Mobile is an IGP-class device with no power connectors and no recorded dimensions. The RTX 5090 SE is a dual-slot card measuring 267 mm by 111 mm by 40 mm, requiring a 1x 16-pin power connector.