AMD Radeon HD 7950 vs NVIDIA GeForce RTX 2080 Ti Comparison

The AMD Radeon HD 7950 and the NVIDIA GeForce RTX 2080 Ti represent two distinct eras of graphics hardware, separated by a significant technological gulf. The data in the database shows a stark contrast in nearly every measurable category, from raw compute throughput to memory bandwidth and API feature support. This analysis examines the recorded specifications and benchmark scores to determine what the data implies about their relative positions.

Head-to-Head Benchmarks

A direct comparison of the recorded benchmark scores reveals a substantial performance gap. The NVIDIA GeForce RTX 2080 Ti is the clear winner in every recorded test, though the margin varies significantly by workload.

In the one common benchmark metric available for the AMD card, Geekbench Metal, the HD 7950 scores 33,951 points. For context, this places it in the 78th percentile of all GPUs in the database. Its nearest rivals in this test are the AMD Radeon RX 480 (34,997 points, a -0.1% difference), the AMD Radeon RX 7700S (33,849 points, a 0.3% difference), the AMD Radeon RX 560 XT (34,133 points, a -0.5% difference), and the NVIDIA RTX A2000 12 GB (34,154 points, a -0.6% difference). These deltas are all within a single percentage point, indicating that the HD 7950's Metal score is competitive with that specific group of cards.

The RTX 2080 Ti, however, is not measured by the same test. Instead, its recorded scores span a wider range of workloads. In Geekbench OpenCL, it scores 128,171 points, and in Geekbench Vulkan, it reaches 132,930 points. These are substantially higher numbers than the HD 7950's lone score, but the different test APIs mean a direct numerical comparison is not possible. The RTX 2080 Ti's overall average benchmark score across all recorded tests is 29,783 points, which places it in the 75th percentile of all GPUs. Its nearest rivals are the NVIDIA GeForce RTX 5070 Mobile (29,928 points, -0.5%), the NVIDIA GeForce RTX 3070 Ti (29,945 points, -0.5%), the AMD Radeon RX 6800 (30,095 points, -1%), and the AMD FirePro W8000 (29,211 points, 2%).

The most telling data points come from the RTX 2080 Ti's performance in specific API tests. In the Passmark suite, it scores 21,548 in G3D, which is a comprehensive gaming metric. Its compute performance is recorded at 10,056 in Passmark GPU Compute. Looking at the DirectX legacy tests, the card scores 235 in DirectX 9, 190 in DirectX 11, and 153 in DirectX 10, with a notably lower score of 84 in DirectX 12. This pattern suggests that while the card excels in modern workloads, its performance in the older DirectX 12 test is a relative weak point. The data shows no head-to-head benchmark entries, meaning the database has no direct comparison scores between these two specific cards, leaving the analysis to rely on their respective standings within their own performance peer groups.

FAQ

Q: How does the AMD Radeon HD 7950 compare to the NVIDIA GeForce RTX 2080 Ti in raw compute performance?

A: The data shows a massive difference in theoretical compute. The RTX 2080 Ti is rated for 13.45 TFLOPS FP32 performance, while the HD 7950 is rated for 2.867 TFLOPS. This represents a substantial generational leap in processing power.

Q: Which card has more memory, and what does that imply?

A: The RTX 2080 Ti has 11 GB of GDDR6 memory on a 352-bit bus, yielding 616.0 GB/s of bandwidth. The HD 7950 has 3 GB of GDDR5 on a 384-bit bus, yielding 240.0 GB/s. The RTX 2080 Ti's higher capacity and bandwidth make it better suited for high-resolution textures and modern workloads.

Q: What is the difference in their process nodes?

A: The HD 7950 is built on TSMC's 28 nm process, while the RTX 2080 Ti is built on TSMC's 12 nm process. This node difference is a key factor in the RTX 2080 Ti's ability to pack more transistors, 18,600 million versus 4,313 million, into a larger die.

Q: Do both cards support the same level of DirectX?

A: No. The RTX 2080 Ti supports DirectX 12 Ultimate (12_2), while the HD 7950 supports DirectX 12 (11_1). This means the RTX 2080 Ti can take advantage of newer hardware features like ray tracing and mesh shaders, which the HD 7950 cannot.

Q: What is the power consumption difference?

A: The RTX 2080 Ti has a TDP of 250 W, which is 50 W higher than the HD 7950's 200 W TDP. The database also suggests a 600 W power supply for the RTX 2080 Ti versus a 550 W unit for the HD 7950.

Q: Which card has higher pixel and texture rates?

A: The RTX 2080 Ti is far ahead, with a pixel rate of 136.0 GPixel/s and a texture rate of 420.2 GTexel/s. The HD 7950 records 25.60 GPixel/s and 89.60 GTexel/s respectively. These figures indicate the RTX 2080 Ti can fill the screen with detailed geometry and textures much faster.

Architecture Differences

The architectural divide between these two GPUs is fundamental. The AMD Radeon HD 7950 is based on the Graphics Core Next 1.0 (GCN 1.0) architecture, built on the Tahiti chip. This is part of AMD's Southern Islands generation, which succeeded the Northern Islands lineup. The chip is manufactured on a 28 nm process at TSMC, containing 4,313 million transistors on a die size of 352 mm². This results in a transistor density of 12.3M per mm².

The NVIDIA GeForce RTX 2080 Ti, in contrast, is built on the Turing architecture, using the TU102 chip. It belongs to the GeForce 20-series, succeeding the GeForce 10 series. The TU102 is a much larger and more complex chip, manufactured on a 12 nm process at the same foundry, TSMC. It packs 18,600 million transistors into a die size of 754 mm², yielding a transistor density of 24.7M per mm². This density figure is roughly double that of the HD 7950, highlighting the efficiency gains of the newer node.

The most significant architectural difference is the inclusion of dedicated hardware in the RTX 2080 Ti. It has 68 ray tracing cores and 544 tensor cores. These are not present on the HD 7950, which has no such units. This means the RTX 2080 Ti can accelerate ray-traced lighting and AI-driven features like DLSS, while the HD 7950 relies solely on its traditional shader array. The shading unit count also reflects this gap: the RTX 2080 Ti has 4,352 shading units, 272 texture mapping units (TMUs), and 88 render output units (ROPs). The HD 7950 has 1,792 shading units, 112 TMUs, and 32 ROPs.

Specification Differences

The specification sheets for the two cards differ in almost every field. The RTX 2080 Ti has a base clock of 1350 MHz and a boost clock of 1545 MHz, while the HD 7950's base and boost clocks are not recorded in the database. The RTX 2080 Ti's memory clock runs at 1750 MHz, or 14 Gbps effective, while the HD 7950's runs at 1250 MHz, or 5 Gbps effective. The memory configuration is also distinct: the RTX 2080 Ti has 11 GB of GDDR6 on a 352-bit bus, while the HD 7950 has 3 GB of GDDR5 on a 384-bit bus.

In terms of compute rates, the RTX 2080 Ti delivers 13.45 TFLOPS FP32 and 26.90 TFLOPS FP16 (2:1). The HD 7950 is rated at 2.867 TFLOPS FP32, with no FP16 figure recorded. The pixel and texture rates are similarly lopsided: 136.0 GPixel/s and 420.2 GTexel/s for the RTX 2080 Ti versus 25.60 GPixel/s and 89.60 GTexel/s for the HD 7950. The power profile also differs, with the RTX 2080 Ti rated at 250 W TDP and needing 2x 8-pin power connectors, while the HD 7950 is rated at 200 W TDP and uses 2x 6-pin connectors. The suggested power supply is 600 W for the RTX 2080 Ti and 550 W for the HD 7950.

The physical dimensions are close but not identical. The HD 7950 is 278 mm long, 111 mm tall, and 38 mm wide. The RTX 2080 Ti is slightly shorter at 267 mm, but taller at 116 mm, and narrower at 35 mm. Both are dual-slot cards. The display outputs also differ: the HD 7950 has 1x DVI, 1x HDMI 1.4a, and 2x mini-DisplayPort 1.2, while the RTX 2080 Ti offers 1x HDMI 2.0, 3x DisplayPort 1.4a, and 1x USB Type-C. The API support is a crucial difference, with the RTX 2080 Ti supporting DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the HD 7950 supports DirectX 12 (11_1) and Vulkan 1.2.170. Both cards support OpenGL 4.6.

The Verdict

The data is unambiguous regarding overall performance. The NVIDIA GeForce RTX 2080 Ti is a decisively more powerful GPU than the AMD Radeon HD 7950. The sheer scale of the differences in compute throughput, memory bandwidth, and pixel/texture rates points to a card that is in a completely different performance class. The RTX 2080 Ti's average benchmark score of 29,783 points, while from a different test suite than the HD 7950's 33,951 Metal score, should not be read as a direct comparison; the percentile rankings show they occupy similar positions relative to their own peers, but the raw specifications tell a story of generational dominance for the NVIDIA card.

However, the HD 7950 is not without merit. Its percentile rank of 78 versus the RTX 2080 Ti's 75 suggests that, relative to all GPUs in the database, the older card holds its own surprisingly well. The HD 7950's nearest rivals are all within a fraction of a percent of its score, indicating that it remains competitive with a specific set of mid-range cards from later generations. The RTX 2080 Ti, in contrast, is clustered with high-end cards like the RTX 3070 Ti and RX 6800, with deltas of -0.5% and -1% respectively. The verdict is that the RTX 2080 Ti is the superior choice for any modern, demanding workload, while the HD 7950 is a legacy card that can still hold a place in the database's performance hierarchy.

Where Each One Wins

The RTX 2080 Ti wins in every scenario that demands raw performance. This includes modern gaming at high resolutions, where its 11 GB of GDDR6 memory and 616.0 GB/s bandwidth are critical. It also wins in compute-heavy applications, as evidenced by its 13.45 TFLOPS FP32 rating and its dedicated tensor cores for AI workloads. The presence of ray tracing cores means it can handle real-time ray-traced effects, a task the HD 7950 cannot perform. Its higher pixel rate of 136.0 GPixel/s and texture rate of 420.2 GTexel/s make it the clear choice for rendering detailed scenes.

The HD 7950's advantages are more contextual than absolute. Its 3 GB of memory and 240.0 GB/s bandwidth are sufficient for older games and lighter workloads. Its 384-bit bus is wide, which historically helps with certain memory-intensive tasks, but the RTX 2080 Ti's GDDR6 memory is far faster. The HD 7950's lower TDP of 200 W means it requires less power than the RTX 2080 Ti's 250 W, and its suggested PSU of 550 W is lower than the 600 W suggested for the NVIDIA card. In the database, the HD 7950's closest rival, the RX 480, is just 0.1% behind it, meaning the card is still a viable option for users on legacy systems. The RTX 2080 Ti, conversely, is the winner for anyone needing the highest possible frame rates or engaging with modern graphics features. The data shows no scenario where the HD 7950 outperforms the RTX 2080 Ti in a direct specification comparison; its wins are confined to the range of lower power draw and compatibility with older software environments.