AMD Radeon HD 7970 vs NVIDIA GeForce RTX 2080 Ti Comparison

The Radeon HD 7970 and the GeForce RTX 2080 Ti represent two very different eras of GPU design, and the recorded data makes the gap between them unambiguous. Both are end-of-life flagships from their respective manufacturers, both carry a 250 W TDP and a dual-slot, dual-connector power configuration, and both sit in the same overall percentile band in the database (79th for the HD 7970, 75th for the RTX 2080 Ti). But the head-to-head benchmark data shows a crushing difference in raw compute capability, and the architectural distance between Tahiti and TU102 explains why.

Head-to-Head Benchmarks

Only one test appears in both cards' recorded results: Geekbench OpenCL. That single data point is decisive. The RTX 2080 Ti scored 128171, while the HD 7970 managed 34541, a delta of 73.1 percent in NVIDIA's favor. In practical terms, the Turing card delivers roughly 3.7 times the OpenCL compute throughput of the Tahiti card, which is consistent with the theoretical figures: 13.45 TFLOPS FP32 for the RTX 2080 Ti against 3.789 TFLOPS for the HD 7970.

The rest of the RTX 2080 Ti's results, while not directly comparable because the HD 7970 lacks entries in those tests, paint a picture of a card that still holds its own against much newer hardware. Its nearest rivals in the database average-score rankings are the GeForce RTX 5070 Mobile and the RTX 3070 Ti, both within 0.5 percent of its average score of 29783, and the Radeon RX 6800 at 1 percent behind. In other words, the 2080 Ti still trades blows with cards from two generations later.

The HD 7970's rival set tells a different story. Its average score of 34541 sits within 1 percent of professional NVIDIA parts: 0.1 percent below the T1000 8 GB, 0.4 percent below the A2, 0.5 percent above the TITAN V, and 1 percent above the RTX A1000. Being within half a percent of a TITAN V in averaged database terms is respectable company for a 28 nm part, but it also reveals that the HD 7970's percentile placement reflects a broad database population that includes many integrated and low-end GPUs, not head-to-head competitiveness with modern discrete cards.

The full tally is zero benchmark wins for the HD 7970 and one for the RTX 2080 Ti in the shared-test comparison. There are no categories in the recorded data where the older card comes out ahead.

Architecture Differences

The generational distance is stark. The HD 7970 is built on TSMC's 28 nm process with the Tahiti chip, packing 4,313 million transistors into a 352 mm² die, for a density of 12.3M per mm². The RTX 2080 Ti uses TSMC's 12 nm process with the TU102 chip: 18,600 million transistors across 754 mm², at 24.7M per mm². That is more than four times the transistor count at double the density, and it shows up in every functional block.

Shading units go from 2048 on the HD 7970 to 4352 on the RTX 2080 Ti. Texture mapping units rise from 128 to 272, and render output units from 32 to 88. The resulting throughput gaps are wide: pixel fill rate of 29.60 GPixel/s versus 136.0 GPixel/s, and texture fill rate of 118.4 GTexel/s versus 420.2 GTexel/s. The 2080 Ti is roughly 4.6 times faster in pixel output and about 3.5 times faster in texturing on paper.

The feature gap matters as much as the counts. The HD 7970's GCN 1.0 architecture has no RT cores and no tensor cores; the RTX 2080 Ti has 68 RT cores and 544 tensor cores, enabling hardware ray tracing and the FP16 throughput of 26.90 TFLOPS at a 2:1 rate. The HD 7970 lists no FP16 figure at all.

Memory is another decisive difference. The HD 7970 carries 3 GB of GDDR5 on a 384-bit bus, running at an effective 5.5 Gbps for 264.0 GB/s of bandwidth. The RTX 2080 Ti has 11 GB of GDDR6 on a 352-bit bus at an effective 14 Gbps, yielding 616.0 GB/s. Despite a narrower bus, the newer memory technology more than doubles bandwidth and provides nearly four times the capacity. Clocking also differs in kind: the HD 7970's entry lists no base or boost clock, only the memory figure, while the 2080 Ti records a 1350 MHz base and 1545 MHz boost.

Software support diverges sharply. The HD 7970 reports DirectX 12 (11_1) feature level, OpenGL 4.6, and Vulkan 1.2.170, while the RTX 2080 Ti reports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Turing card's API support is fully current with modern rendering features; the Tahiti card's is a legacy compatibility profile. Display output follows the same pattern: DVI, HDMI 1.4a, and two mini-DisplayPort 1.2 on the HD 7970, versus HDMI 2.0, three DisplayPort 1.4a, and a USB Type-C port on the 2080 Ti.

Where Each One Wins

Based on the recorded data, the RTX 2080 Ti wins every measurable performance category. The single shared benchmark, Geekbench OpenCL, goes to NVIDIA by 73.1 percent. Theoretical metrics reinforce this across the board: FP32 compute, fill rates, memory bandwidth, and capacity all favor the Turing card by large multiples. The 2080 Ti's broader benchmark record adds depth: a Passmark G3D score of 21548, a GPU compute score of 10056, a Vulkan Geekbench result of 132930, and a 3DMark Steel Nomad DX12 score of 3537.

The HD 7970's case rests on context rather than contest wins. Its 79th percentile placement against all GPUs in the database is actually higher than the 2080 Ti's 75th, and its average score lands it alongside professional cards like the TITAN V and the T1000 8 GB. For a card released in early 2012 as part of the Southern Islands generation, remaining in that company is the extent of its claim. There is no workload in the data where it beats the 2080 Ti.

Where the two cards draw level is physical and electrical footprint: identical 250 W TDP, identical dual-slot width, identical 600 W suggested PSU, and the same PCIe 3.0 x16 interface. The HD 7970 is slightly longer at 275 mm versus 267 mm, slightly wider at 38 mm versus 35 mm, but shorter in height at 111 mm versus 116 mm. These are minor dimensional variations, not meaningful differentiators.

The Verdict

The data supports exactly one conclusion for performance-oriented buyers: the RTX 2080 Ti is the stronger card in every measured respect. It is roughly 3.7 times faster in shared OpenCL compute, has hardware the HD 7970 entirely lacks in the form of RT and tensor cores, more than double the memory bandwidth, nearly four times the memory capacity, and modern API support through DirectX 12 Ultimate and Vulkan 1.4. Its database rivals include the RTX 3070 Ti and RX 6800, confirming it still performs at a level associated with considerably newer hardware.

The HD 7970 makes sense only as a historical or legacy-compatibility option. It is end-of-life, its GCN 1.0 architecture predates hardware ray tracing and machine-learning accelerators, its 3 GB frame buffer and 264.0 GB/s of bandwidth are far below contemporary demands, and it lost the only head-to-head test in the record by 73.1 percent. Anyone choosing between the two for compute or gaming should pick the 2080 Ti without hesitation; the HD 7970's relevance is limited to retro builds and its place in the lineage between Northern Islands and Sea Islands.

FAQ

Q: How much faster is the RTX 2080 Ti than the HD 7970 in the shared benchmark?

A: In Geekbench OpenCL, the only test recorded for both cards, the RTX 2080 Ti scored 128171 against the HD 7970's 34541, a 73.1 percent delta in NVIDIA's favor.

Q: Do both cards support ray tracing?

A: No. The RTX 2080 Ti includes 68 RT cores and 544 tensor cores. The HD 7970's GCN 1.0 architecture has neither.

Q: How do their memory configurations compare?

A: The HD 7970 has 3 GB of GDDR5 on a 384-bit bus with 264.0 GB/s of bandwidth. The RTX 2080 Ti has 11 GB of GDDR6 on a 352-bit bus with 616.0 GB/s of bandwidth.

Q: Which newer cards match the RTX 2080 Ti in the database?

A: Its average score of 29783 is within 0.5 percent of the GeForce RTX 5070 Mobile and RTX 3070 Ti, and within 1 percent of the Radeon RX 6800.

Q: Do they have the same power requirements?

A: Yes in the recorded specs: both list a 250 W TDP and a 600 W suggested PSU, though the HD 7970 uses one 6-pin plus one 8-pin connector while the 2080 Ti uses two 8-pin connectors.

Q: Which DirectX feature level does each support?

A: The HD 7970 reports DirectX 12 (11_1); the RTX 2080 Ti reports DirectX 12 Ultimate (12_2).

Specification Differences

| Field | AMD Radeon HD 7970 | NVIDIA GeForce RTX 2080 Ti |

|---|---|---|

| Series | null | GeForce 20-series |

| Chip | Tahiti | TU102 |

| Architecture | GCN 1.0 | Turing |

| Generation | Southern Islands (HD 7900) | GeForce 20 |

| Process node | 28 nm | 12 nm |

| Transistors | 4,313 million | 18,600 million |

| Die size | 352 mm² | 754 mm² |

| Transistor density | 12.3M / mm² | 24.7M / mm² |

| Base clock | not listed | 1350 MHz |

| Boost clock | not listed | 1545 MHz |

| Memory size | 3 GB | 11 GB |

| Memory type | GDDR5 | GDDR6 |

| Bus width | 384 bit | 352 bit |

| Bandwidth | 264.0 GB/s | 616.0 GB/s |

| Memory speed | 1375 MHz (5.5 Gbps effective) | 1750 MHz (14 Gbps effective) |

| Shading units | 2048 | 4352 |

| TMUs | 128 | 272 |

| ROPs | 32 | 88 |

| RT cores | none | 68 |

| Tensor cores | none | 544 |

| Pixel rate | 29.60 GPixel/s | 136.0 GPixel/s |

| Texture rate | 118.4 GTexel/s | 420.2 GTexel/s |

| FP32 | 3.789 TFLOPS | 13.45 TFLOPS |

| FP16 | not listed | 26.90 TFLOPS (2:1) |

| Power connectors | 1x 6-pin + 1x 8-pin | 2x 8-pin |

| Display outputs | 1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2 | 1x HDMI 2.0, 3x DisplayPort 1.4a, 1x USB Type-C |

| DirectX | 12 (11_1) | 12 Ultimate (12_2) |

| Vulkan | 1.2.170 | 1.4 |

| Length | 275 mm | 267 mm |

| Height | 111 mm | 116 mm |

| Width | 38 mm | 35 mm |

| Release date | January 2012 | September 2018 |

| Predecessor | Northern Islands | GeForce 10 |

| Successor | Sea Islands | GeForce 30 |

| Launch MSRP | 549 USD | 999 USD |

| Percentile vs all GPUs | 79 | 75 |

| Average benchmark score | 34541 | 29783 |