AMD Radeon HD 7950 vs AMD Radeon Pro 5500 XT Comparison

The Verdict

The benchmark database places these two AMD cards at very different points in the GPU landscape. The AMD Radeon Pro 5500 XT is the clear winner in the only shared test, scoring 54,779 in Geekbench Metal compared to the HD 7950's 33,951, a 61.3% advantage. If you need a modern, efficient card for current software and API support, the Pro 5500 XT is the only sensible choice. The HD 7950, while a legendary card in its day, is now relegated to legacy systems and specific use cases where its older architecture and 3 GB of memory are still sufficient. The data shows the Pro 5500 XT is not just faster, but also far more efficient, drawing 125 W versus 200 W and utilizing a 7 nm process versus 28 nm. The HD 7950 should only be picked by someone needing to run very old software or who has a strict requirement for its specific display outputs (1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2). For everyone else, the Pro 5500 XT is the better investment, despite its lack of display outputs (it is an IGP for Mac systems).

FAQ

Q: Which card is faster in the recorded benchmarks?

A: The AMD Radeon Pro 5500 XT is decisively faster. In the Geekbench Metal test, it scores 54,779 versus the HD 7950's 33,951, a 61.3% lead.

Q: How do these cards compare to their nearest rivals in the database?

A: The Pro 5500 XT holds its own against modern cards, sitting within 1.3% of the NVIDIA RTX 5880 Ada Generation and 0.5% of the RTX 5090 Mobile. The HD 7950 is practically tied with the AMD Radeon RX 480, showing a -0.1% delta, and is within 0.6% of the NVIDIA RTX A2000 12 GB.

Q: What are the major architectural differences?

A: The Pro 5500 XT uses the Navi 14 chip on RDNA 1.0 architecture built on a 7 nm process. The HD 7950 uses the Tahiti chip on GCN 1.0 architecture built on a 28 nm process. This gives the Pro 5500 XT a much higher transistor density of 40.5M per mm² versus 12.3M per mm².

Q: Is the newer card more power efficient?

A: Yes, significantly. The Pro 5500 XT has a TDP of 125 W and requires no power connectors, with a suggested PSU of 300 W. The HD 7950 has a TDP of 200 W, requires 2x 6-pin power connectors, and needs a 550 W PSU.

Q: Which card has more memory bandwidth?

A: The older HD 7950 actually has a higher memory bandwidth at 240.0 GB/s, due to its wider 384-bit bus, compared to the Pro 5500 XT's 224.0 GB/s over a 128-bit bus. However, the Pro 5500 XT has more capacity (8 GB vs 3 GB) and faster memory type (GDDR6 vs GDDR5).

Q: What are the physical and interface differences?

A: The Pro 5500 XT is an IGP (integrated graphics processor) with no display outputs and uses a PCIe 4.0 x8 interface. The HD 7950 is a dual-slot card measuring 278 mm in length, 111 mm in height, and 38 mm in width, with a PCIe 3.0 x16 interface and multiple display outputs.

Architecture Differences

The architectural divide between these two cards is vast, representing a generational leap in design philosophy. The Pro 5500 XT is built on the RDNA 1.0 architecture, a modern design focused on efficiency and higher clock speeds. Its Navi 14 chip is manufactured on TSMC's 7 nm process, allowing for 6,400 million transistors packed into a compact 158 mm² die. This results in a transistor density of 40.5M per mm², a figure that illustrates how much more advanced the manufacturing process is compared to the older card.

In contrast, the HD 7950 is based on the GCN 1.0 (Graphics Core Next) architecture, which was AMD's foundational design for compute-heavy workloads. Its Tahiti chip uses a much older 28 nm process from TSMC, containing 4,313 million transistors on a large 352 mm² die. The transistor density here is just 12.3M per mm², highlighting the physical size penalty of the older manufacturing technology. The GCN architecture also had a different approach to shader design, featuring 1792 shading units, while the RDNA design in the Pro 5500 XT uses 1536 shading units. Despite fewer shading units, the newer card achieves far higher performance due to its superior clock speeds and architectural efficiency.

The API support also differs significantly. The Pro 5500 XT supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The HD 7950 supports DirectX 12 (11_1), OpenGL 4.6, but only Vulkan 1.2.170. This means the newer card has better support for modern graphics APIs, which is crucial for current games and applications. The Pro 5500 XT also supports FP16 at 10.80 TFLOPS with a 2:1 ratio, while the HD 7950 has no recorded FP16 capability. The Pro 5500 XT's memory configuration is also a key architectural difference: it uses 8 GB of GDDR6 on a 128-bit bus, while the HD 7950 uses 3 GB of GDDR5 on a 384-bit bus.

Specification Differences

The specification sheets for these two cards reveal stark contrasts across nearly every measurable field. The most obvious difference is the manufacturing process: the Pro 5500 XT uses a 7 nm node, while the HD 7950 uses a 28 nm node. This leads to a massive difference in die size, with the Pro 5500 XT at 158 mm² versus the HD 7950's 352 mm², and transistor counts of 6,400 million versus 4,313 million respectively.

Clock speeds are a major differentiator. The Pro 5500 XT has a base clock of 1187 MHz and a boost clock of 1757 MHz. The HD 7950 has no recorded base or boost clock values in the database, but its memory clock is 1250 MHz (5 Gbps effective), while the Pro 5500 XT's memory runs at 1750 MHz (14 Gbps effective). This faster memory clock, combined with GDDR6 technology, gives the Pro 5500 XT a bandwidth of 224.0 GB/s, which is slightly lower than the HD 7950's 240.0 GB/s due to the narrower 128-bit bus versus the 384-bit bus.

Compute resources differ in interesting ways. The HD 7950 has more shading units (1792 vs 1536), more TMUs (112 vs 96), but the same number of ROPs (32). However, the Pro 5500 XT's higher clocks give it dramatically better throughput: its pixel rate is 56.22 GPixel/s versus 25.60 GPixel/s, its texture rate is 168.7 GTexel/s versus 89.60 GTexel/s, and its FP32 performance is 5.398 TFLOPS versus 2.867 TFLOPS. The Pro 5500 XT also has FP16 capability at 10.80 TFLOPS, while the HD 7950 has none recorded.

Power and physical requirements are also very different. The Pro 5500 XT has a TDP of 125 W, no power connectors (it is an IGP), and a suggested PSU of 300 W. The HD 7950 has a TDP of 200 W, requires 2x 6-pin power connectors, and a suggested PSU of 550 W. The HD 7950 is a dual-slot card measuring 278 mm x 111 mm x 38 mm, while the Pro 5500 XT is an IGP with no dimensions recorded. The bus interface also differs: PCIe 4.0 x8 for the newer card versus PCIe 3.0 x16 for the older one. The HD 7950 has display outputs (1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2), while the Pro 5500 XT has none.

Head-to-Head Benchmarks

The database contains one direct head-to-head benchmark between these two cards: Geekbench Metal. In this test, the AMD Radeon Pro 5500 XT scores 54,779, while the AMD Radeon HD 7950 scores 33,951. The Pro 5500 XT wins with a delta of 61.3%, a substantial margin that shows the generational improvement in GPU compute performance.

This 61.3% advantage is significant, but it is worth contextualizing. The HD 7950, despite being over eight years older, still manages to hold its own in the 78th percentile of all GPUs in the database. The Pro 5500 XT sits in the 84th percentile, which is higher, but the gap is not as wide as the raw score difference might suggest. The HD 7950's nearest rivals include the AMD Radeon RX 480 (avg score 33,997, delta -0.1%) and the RX 7700S (avg score 33,849, delta 0.3%), showing that it is still competitive with much newer entry-level and mid-range cards.

The Pro 5500 XT's nearest rivals are much more powerful modern cards. It is within 0.5% of the NVIDIA GeForce RTX 5090 Mobile (avg score 45,152) and within 1.3% of the NVIDIA RTX 5880 Ada Generation (avg score 45,972). It also sits close to the Intel Arc A730M (avg score 45,592, delta -0.5%) and the NVIDIA GeForce RTX 4070 Ti (avg score 44,795, delta 1.3%). This places the Pro 5500 XT in a performance tier that would have been unthinkable for a professional card just a few years ago.

The only benchmark where both cards have data is Geekbench Metal, which is a compute-oriented test. It does not measure gaming frame rates or professional rendering performance directly, but it does provide a strong indicator of raw computational power. The Pro 5500 XT also has scores for Geekbench OpenCL (41,772) and Geekbench Vulkan (39,601), while the HD 7950 has no recorded scores for these tests, so a direct comparison is limited to Metal only.

Where Each One Wins

The AMD Radeon Pro 5500 XT wins in nearly every measurable category according to the database. Its 61.3% lead in Geekbench Metal makes it the clear choice for any compute-heavy workload that uses the Metal API. It also has a higher average benchmark score (45,384 versus 33,951), placing it in the 84th percentile versus the HD 7950's 78th percentile. The Pro 5500 XT is also the better choice for modern software due to its newer architecture, higher API support (Vulkan 1.4 versus 1.2.170), and support for FP16 compute. Its lower power draw (125 W versus 200 W) and lack of power connectors make it far easier to integrate into a system, and its 8 GB of GDDR6 memory provides more capacity for larger datasets and textures.

The AMD Radeon HD 7950, however, has a few specific areas where it holds an advantage. Its memory bandwidth is higher at 240.0 GB/s versus 224.0 GB/s, which can be beneficial for certain bandwidth-bound workloads that do not require the latest architecture. It also has a wider memory bus (384-bit versus 128-bit) and more shading units (1792 versus 1536) and TMUs (112 versus 96), though these are offset by much lower clock speeds. The HD 7950 also has physical display outputs, making it usable in a traditional desktop setup, whereas the Pro 5500 XT is an IGP with no outputs and would require a separate GPU for display duties. For legacy software that relies on older GCN-specific optimizations or requires DirectX 11.1 features, the HD 7950 might still function, but the Pro 5500 XT's DirectX 12_1 support is more future-proof. The HD 7950 also has a recorded launch MSRP of 449 USD, which is a historical data point but not a current purchasing factor. In summary, the Pro 5500 XT is the superior card for almost any modern use case, while the HD 7950 only makes sense for very specific legacy or bandwidth-oriented scenarios.