AMD FirePro S9300 X2 vs AMD Radeon RX 7900 GRE Comparison

# Head-to-Head Benchmarks

The benchmark data tells a remarkably one-sided story in favor of the AMD Radeon RX 7900 GRE, though the two cards occupy the same percentile tier. In Geekbench OpenCL, the RX 7900 GRE scores 175,758 against the FirePro S9300 X2's 27,971 — a staggering 84.1% advantage. This is not a marginal gap; it represents a fundamental generational leap in compute throughput. The Vulkan results follow the same pattern: the RX 7900 GRE posts 99,850 versus 37,109 for the FirePro, a 62.8% differential. What makes this particularly striking is that both cards sit at the 77th percentile among all GPUs, and their average benchmark scores are nearly identical (32,540 for the FirePro versus 32,456 for the RX 7900 GRE, a 0.3% difference). The averages obscure the individual test results, which show the RX 7900 GRE dominating in every head-to-head comparison available.

The deltaPct values in the nearestRivals data reinforce this split personality. The FirePro S9300 X2's closest rival is the AMD Radeon RX 590 GME at 32,601 average score (0.2% ahead), while the RX 7900 GRE's nearest competitor is the AMD FirePro S10000 at 32,388 (0.2% behind). Neither card's average benchmark score tells the full story. The FirePro's average of 32,540 comes from just two tests — Geekbench OpenCL and Vulkan — while the RX 7900 GRE's 32,456 averages across ten different benchmarks including PassMark suites and 3DMark Steel Nomad. This disparity in test coverage means the averages are not directly comparable, yet the head-to-head results where both cards ran identical tests show overwhelming RX 7900 GRE superiority.

# Where Each One Wins

The data reveals a clear functional split based on workload characteristics. The RX 7900 GRE wins both available head-to-head benchmarks, but the magnitude of its wins varies dramatically by API. In OpenCL, a compute-oriented workload, the RX 7900 GRE achieves 175,758 — more than six times the FirePro's 27,971. This suggests the newer architecture handles general-purpose compute with far greater efficiency. The Vulkan gap, while still decisive at 99,850 versus 37,109, is proportionally smaller, indicating the FirePro's GCN 3.0 architecture retains some relevance in graphics-oriented workloads.

The FirePro S9300 X2's only path to relevance comes through its specialized positioning. With 4 GB of HBM memory on a 4096-bit bus delivering 512.0 GB/s bandwidth, it was designed for server-side compute tasks typical of its FirePro Server (Sx300) generation. The RX 7900 GRE counters with 16 GB of GDDR6 on a 256-bit bus at 576.0 GB/s — slightly higher bandwidth despite the narrower bus. For applications that historically optimized for GCN architecture, the FirePro might still function, but the benchmark evidence shows no test where it outperforms the RX 7900 GRE. The RX 7900 GRE's PassMark results paint a picture of broad capability: 27,089 in G3D, 15,016 in GPU compute, and strong DirectX scores across versions 9 through 12. The FirePro's two-test benchmark profile offers no comparable diversity.

# Architecture Differences

The architectural chasm between these two GPUs explains every benchmark delta. The FirePro S9300 X2 uses the Capsaicin chip built on GCN 3.0 architecture, fabricated on TSMC's 28 nm process. Its 8,900 million transistors occupy a 596 mm² die, yielding a transistor density of 14.9 million per square millimeter. The RX 7900 GRE employs the Navi 31 chip with RDNA 3.0 architecture, built on TSMC's 5 nm node. It packs 57,700 million transistors into a smaller 529 mm² die, achieving 109.1 million transistors per square millimeter — a 7.3x density improvement that reflects the seven-year manufacturing process gap.

The compute resources differ substantially. The RX 7900 GRE fields 5,120 shading units, 320 texture mapping units, and 160 ROPs, versus the FirePro's 4,096 shaders, 256 TMUs, and 64 ROPs. The RX 7900 GRE also includes 80 ray tracing cores, a feature entirely absent from the FirePro. Pixel throughput tells the story: 359.2 GPixel/s for the RX 7900 GRE versus 62.40 GPixel/s for the FirePro. Texture rate similarly favors the newer card at 718.4 GTexel/s versus 249.6 GTexel/s. FP32 performance reaches 45.98 TFLOPS on the RX 7900 GRE versus 7.987 TFLOPS on the FirePro — a 5.8x difference. The RX 7900 GRE additionally offers FP16 at 91.96 TFLOPS (2:1 ratio), while the FirePro has no listed FP16 capability.

Memory architecture reflects different design philosophies. The FirePro uses 4 GB of HBM with a 4096-bit bus — an enormous interface for its era — while the RX 7900 GRE uses 16 GB of GDDR6 on a 256-bit bus. Clock speeds differ dramatically: the RX 7900 GRE runs at 1287 MHz base, 1880 MHz game, and 2245 MHz boost, while the FirePro lists no base or boost clocks, only a memory clock of 500 MHz (1000 Mbps effective). The RX 7900 GRE's memory runs at 2250 MHz (18 Gbps effective). Both cards consume dual-slot space with 2x 8-pin power connectors, but the RX 7900 GRE draws 260 W TDP versus 300 W for the FirePro, and recommends a 600 W PSU versus 700 W.

# FAQ

Q: Why does the RX 7900 GRE have such a higher average benchmark score despite similar percentile rankings?

A: Both cards sit at the 77th percentile among all GPUs, but the RX 7900 GRE's average of 32,456 comes from ten benchmarks including PassMark and 3DMark tests, while the FirePro's 32,540 average derives from only two Geekbench tests. The head-to-head results show the RX 7900 GRE winning by 84.1% in OpenCL and 62.8% in Vulkan.

Q: What explains the FirePro's massive OpenCL deficit?

A: The FirePro's GCN 3.0 architecture on 28 nm delivers 7.987 TFLOPS FP32 performance, while the RX 7900 GRE's RDNA 3.0 architecture on 5 nm achieves 45.98 TFLOPS. The newer card also has 5,120 shading units versus 4,096, and 160 ROPs versus 64.

Q: Do the memory systems differ in meaningful ways?

A: Yes. The FirePro uses 4 GB of HBM on a 4096-bit bus with 512.0 GB/s bandwidth, while the RX 7900 GRE uses 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The RX 7900 GRE offers four times the capacity and slightly higher bandwidth despite the narrower bus.

Q: Which card supports newer graphics APIs?

A: The RX 7900 GRE supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The FirePro supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170. Both are limited to OpenGL 4.6, but the RX 7900 GRE has more advanced DirectX and Vulkan versions.

Q: What about display outputs?

A: The FirePro S9300 X2 has no display outputs, reflecting its server-oriented design. The RX 7900 GRE includes 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C, making it suitable for direct display connection.

Q: How do production statuses differ?

A: The FirePro S9300 X2 is end-of-life, released on 2016-03-30, while the RX 7900 GRE is active, released on 2023-07-26. The FirePro's predecessor is FirePro Terascale and successor is Radeon Pro GCN; the RX 7900 GRE's predecessor is Navi II and successor is Navi IV.

# Specification Differences

| Specification | AMD FirePro S9300 X2 | AMD Radeon RX 7900 GRE |

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

| Architecture | GCN 3.0 | RDNA 3.0 |

| Process Node | 28 nm | 5 nm |

| Transistors | 8,900 million | 57,700 million |

| Die Size | 596 mm² | 529 mm² |

| Transistor Density | 14.9M / mm² | 109.1M / mm² |

| Base Clock | Not listed | 1287 MHz |

| Boost Clock | Not listed | 2245 MHz |

| Game Clock | Not listed | 1880 MHz |

| Memory Size | 4 GB | 16 GB |

| Memory Type | HBM | GDDR6 |

| Memory Bus | 4096 bit | 256 bit |

| Memory Clock | 500 MHz (1000 Mbps) | 2250 MHz (18 Gbps) |

| Shading Units | 4096 | 5120 |

| TMUs | 256 | 320 |

| ROPs | 64 | 160 |

| RT Cores | Not listed | 80 |

| Pixel Rate | 62.40 GPixel/s | 359.2 GPixel/s |

| Texture Rate | 249.6 GTexel/s | 718.4 GTexel/s |

| FP32 | 7.987 TFLOPS | 45.98 TFLOPS |

| FP16 | Not listed | 91.96 TFLOPS (2:1) |

| TDP | 300 W | 260 W |

| Suggested PSU | 700 W | 600 W |

| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |

| Display Outputs | No outputs | 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C |

| DirectX | 12 (12_0) | 12 Ultimate (12_2) |

| Vulkan | 1.2.170 | 1.4 |

| Dimensions | 267 mm (10.5") length, 111 mm (4.4") height | 276 mm (10.9") length, 110 mm (4.3") height, 51 mm (2") width |

| Production Status | End-of-life | Active |

| Release Date | 2016-03-30 | 2023-07-26 |

| Launch MSRP | 5,999 USD | 549 USD |

# The Verdict

The data directs different buyers to different cards. Anyone needing a GPU for direct display output should choose the RX 7900 GRE, as the FirePro S9300 X2 offers no display connections whatsoever. The RX 7900 GRE wins every head-to-head benchmark by enormous margins — 84.1% in OpenCL and 62.8% in Vulkan — making it the clear choice for compute workloads. Its 16 GB memory capacity versus 4 GB, 45.98 TFLOPS versus 7.987 TFLOPS FP32, and 359.2 GPixel/s versus 62.40 GPixel/s pixel rate all point to a comprehensively faster card.

The FirePro S9300 X2's only advantages are historical: it launched in 2016 with a 5,999 USD MSRP and represents a unique dual-GPU server design with 4096-bit HBM memory. For legacy server deployments that specifically require GCN 3.0 architecture and cannot migrate workloads, the FirePro remains a functional option. Its 512.0 GB/s bandwidth is only 11% lower than the RX 7900 GRE's 576.0 GB/s, and its 4096 shading units are not trivial. However, with no display outputs, higher TDP (300 W versus 260 W), and end-of-life status, the FirePro cannot be recommended for any new deployment. The RX 7900 GRE, at 549 USD launch MSRP, offers modern API support including DirectX 12 Ultimate and Vulkan 1.4, ray tracing cores, and active production status. Benchmark results indicate the RX 7900 GRE is the superior choice for essentially every use case, with the FirePro reserved for niche compatibility scenarios in existing server infrastructure.