AMD Radeon HD 7970 vs NVIDIA RTX PRO 4500 Blackwell Comparison

Where Each One Wins

The AMD Radeon HD 7970 and the NVIDIA RTX PRO 4500 Blackwell occupy entirely different performance strata, and the recorded data reflects a generational chasm rather than a competitive duel. The HD 7970 exists in the database with a single OpenCL benchmark result, scoring 34,541 points, while the RTX PRO 4500 posts a far broader suite of scores across DirectX, Vulkan, and compute workloads. The HD 7970's only recorded win condition is legacy compute: its Geekbench OpenCL score of 34,541 places it within 0.1% of the NVIDIA T1000 8 GB (34,561) and ahead of the NVIDIA TITAN V (34,355) by 0.5%, a notable result for a card from the Southern Islands generation.

The RTX PRO 4500 Blackwell, by contrast, wins in every modern graphics category measured. Its Passmark G3D score of 33,360 dwarfs the HD 7970's absence from that test entirely, and its Vulkan score of 221,768 in Geekbench represents a level of API performance the older card cannot approach. The RTX PRO 4500 also dominates in DirectX workloads, with Passmark DirectX 11 scoring 320, DirectX 10 scoring 204, DirectX 12 scoring 119, and DirectX 9 scoring 397. Its GPU compute score of 19,255 in Passmark further cements its position, while the HD 7970 has no comparable entry in that benchmark.

The use-case split is stark. For users running legacy OpenCL workloads where the HD 7970's GCN 1.0 architecture still holds sway, the card remains competitive with mid-range professional GPUs from a decade later, as its 79th percentile ranking among all GPUs indicates. For anything involving modern DirectX 12 Ultimate, Vulkan 1.4, ray tracing, or tensor operations, the RTX PRO 4500 is the only viable option in this comparison, despite its lower 76th percentile ranking, which is dragged down by the inclusion of its weaker DirectX 12 and DirectX 10 Passmark results.

The RTX PRO 4500's 3DMark Steel Nomad DX12 score of 7,025 and its massive 32 GB memory pool make it the clear choice for contemporary content creation, AI inference, and high-resolution rendering. The HD 7970's 3 GB frame buffer and 264.0 GB/s bandwidth are artifacts of an era before 4K rendering and ray tracing were mainstream concerns. In short, the HD 7970 wins only in the narrow niche of legacy compute benchmarks, while the RTX PRO 4500 wins every modern workload the database records.

Architecture Differences

The architectural gulf between these two GPUs spans more than a decade of silicon evolution. The HD 7970 uses the Tahiti chip built on GCN 1.0 architecture, fabricated on TSMC's 28 nm process with 4,313 million transistors on a 352 mm² die, yielding a transistor density of 12.3 million per square millimeter. The RTX PRO 4500 Blackwell uses the GB203 chip on the Blackwell 2.0 architecture, built on TSMC's 5 nm process with 45,600 million transistors on a 378 mm² die, achieving a density of 120.6 million per square millimeter. That is roughly a tenfold increase in transistor density, which explains the massive performance delta despite similar physical dimensions.

Memory configurations diverge sharply. The HD 7970 carries 3 GB of GDDR5 across a 384-bit bus, running at 1375 MHz (5.5 Gbps effective) for 264.0 GB/s of bandwidth. The RTX PRO 4500 packs 32 GB of GDDR7 across a 256-bit bus, at 1750 MHz (28 Gbps effective), delivering 896.0 GB/s. The newer card achieves over three times the bandwidth from a narrower bus, thanks to the GDDR7 standard's higher per-pin data rates.

Compute resources tell a similar story. The HD 7970 offers 2,048 shading units, 128 TMUs, and 32 ROPs, with a pixel rate of 29.60 GPixel/s and a texture rate of 118.4 GTexel/s. Its FP32 throughput is 3.789 TFLOPS. The RTX PRO 4500 fields 10,496 shading units, 328 TMUs, and 112 ROPs, with a pixel rate of 269.6 GPixel/s and a texture rate of 789.5 GTexel/s. Its FP32 performance reaches 50.53 TFLOPS, with FP16 at an identical 50.53 TFLOPS thanks to a 1:1 ratio. The RTX PRO 4500 also includes hardware features the HD 7970 lacks entirely: 82 ray tracing cores and 328 tensor cores, enabling ray-traced rendering and AI acceleration.

Clock behavior also reflects the generational leap. The HD 7970's base and boost clocks are not recorded in the database, but its memory clock of 1375 MHz is far below the RTX PRO 4500's base clock of 1635 MHz and boost clock of 2407 MHz. API support advances from DirectX 12 (11_1) and Vulkan 1.2.170 on the HD 7970 to DirectX 12 Ultimate (12_2) and Vulkan 1.4 on the RTX PRO 4500, with OpenGL 4.6 common to both. The RTX PRO 4500 also moves to PCIe 5.0 x16 from the HD 7970's PCIe 3.0 x16, and its display outputs upgrade from one DVI, one HDMI 1.4a, and two mini-DisplayPort 1.2 connectors to four DisplayPort 2.1b outputs. Power efficiency improves despite higher capability: the RTX PRO 4500's TDP of 200 W is lower than the HD 7970's 250 W, and it requires a single 16-pin connector versus the older card's 6-pin plus 8-pin combination, with a suggested PSU of 550 W versus 600 W.

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark entries comparing these two GPUs, so the comparison relies on the individual benchmark suites for each card. The HD 7970's sole benchmark, Geekbench OpenCL, yields a score of 34,541. In the database's nearest rival analysis, this places it 0.1% behind the NVIDIA T1000 8 GB (34,561), 0.4% behind the NVIDIA A2 (34,690), 0.5% ahead of the NVIDIA TITAN V (34,355), and 1% ahead of the NVIDIA RTX A1000 (34,207). The HD 7970's 79th percentile ranking among all GPUs underscores that this legacy card still outperforms a substantial portion of the GPU landscape in OpenCL compute.

The RTX PRO 4500's average benchmark score of 31,532, however, actually sits below the HD 7970's 34,541, but this is misleading because the average includes its weaker legacy DirectX scores. In Passmark DirectX 9, it scores 397; DirectX 11, 320; DirectX 10, 204; and DirectX 12, 119. These low DirectX 12 and DirectX 10 results pull the average down, yet its Passmark G3D score of 33,360 and GPU compute score of 19,255 reveal the card's true modern capability. Its Geekbench Vulkan score of 221,768 is the standout single result, and its 3DMark Steel Nomad DX12 score of 7,025 represents a demanding modern workload that the HD 7970 cannot run at all.

For the biggest wins, the RTX PRO 4500's Vulkan score of 221,768 versus the HD 7970's absence from Vulkan testing is the clearest generational gap. In compute, the HD 7970's OpenCL score of 34,541 versus the RTX PRO 4500's lack of an OpenCL entry means the older card actually claims the only directly comparable compute metric. The RTX PRO 4500's nearest rivals include the NVIDIA TITAN RTX at 31,676 (0.5% ahead of the RTX PRO 4500), the Intel Arc Pro A30M at 31,894 (1.1% ahead), and the NVIDIA GRID M60-1Q at 31,220 and NVIDIA Quadro M5000 at 31,206 (both 1% behind), which situates it among previous-generation professional cards in average terms. The HD 7970, meanwhile, sits within 1% of four different NVIDIA professional and enthusiast cards, showing remarkable longevity in the OpenCL niche.

FAQ

Q: Which card has more raw compute power in FP32?

A: The RTX PRO 4500 Blackwell delivers 50.53 TFLOPS of FP32 throughput, while the AMD Radeon HD 7970 manages 3.789 TFLOPS. The newer GPU is roughly thirteen times faster in this metric.

Q: How do the memory configurations compare?

A: The HD 7970 has 3 GB of GDDR5 on a 384-bit bus with 264.0 GB/s bandwidth. The RTX PRO 4500 has 32 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The RTX PRO 4500 offers more capacity and more than triple the bandwidth from a narrower bus.

Q: Which card supports ray tracing?

A: Only the RTX PRO 4500 Blackwell, which includes 82 ray tracing cores. The HD 7970 has no ray tracing hardware, as its GCN 1.0 architecture predates that technology.

Q: What are the power requirements for each card?

A: The HD 7970 has a TDP of 250 W and requires a 600 W power supply, using one 6-pin and one 8-pin connector. The RTX PRO 4500 has a TDP of 200 W, requires a 550 W power supply, and uses a single 16-pin connector.

Q: Which card has better API support?

A: The RTX PRO 4500 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the HD 7970 supports DirectX 12 (11_1) and Vulkan 1.2.170. Both support OpenGL 4.6.

Q: How does the HD 7970 compare to its closest rivals in OpenCL?

A: The HD 7970's OpenCL score of 34,541 is 0.1% behind the NVIDIA T1000 8 GB and 0.4% behind the NVIDIA A2, while leading the NVIDIA TITAN V by 0.5% and the NVIDIA RTX A1000 by 1%.

The Verdict

The data presents a clear choice based on workload era. For users running legacy OpenCL compute workloads, the AMD Radeon HD 7970 remains surprisingly relevant, as its 34,541 OpenCL score and 79th percentile ranking demonstrate. It competes within 1% of four different NVIDIA professional cards, including the TITAN V and RTX A1000, in that specific metric. However, the HD 7970 is end-of-life, offers only 3 GB of memory, and lacks support for modern DirectX 12 Ultimate, Vulkan 1.4, ray tracing, and tensor operations. Its launch MSRP was 549 USD, but its practical utility today is confined to legacy applications that do not require contemporary graphics features.

The NVIDIA RTX PRO 4500 Blackwell is the appropriate choice for any modern professional workload. Its 32 GB of GDDR7 memory, 896.0 GB/s bandwidth, 50.53 TFLOPS FP32, 82 ray tracing cores, and 328 tensor cores make it suitable for AI inference, real-time rendering, and high-resolution video work. Its Geekbench Vulkan score of 221,768 and 3DMark Steel Nomad DX12 score of 7,025 confirm its capability in current APIs, while its 200 W TDP and 550 W suggested PSU make it more power-efficient than the older card despite vastly higher performance. The RTX PRO 4500's average benchmark score of 31,532 is pulled down by its low legacy DirectX results, but its G3D score of 33,360 and compute score of 19,255 reflect its true standing.

The verdict is straightforward: the HD 7970 wins only in the narrow OpenCL niche, and even there the database shows no head-to-head advantage over the RTX PRO 4500 because the newer card has no recorded OpenCL result. For every recorded modern benchmark, the RTX PRO 4500 is the only card with a score. Anyone choosing between these two should select the RTX PRO 4500 for contemporary work, and only consider the HD 7970 for maintaining compatibility with software that specifically requires a GCN 1.0 era GPU. The database's measurements leave no ambiguity about which card is the superior modern investment.