AMD Radeon HD 7770M vs AMD Radeon Pro WX 3200 Comparison

The Verdict

The recorded data separates these two AMD mobile and professional GPUs along a clear generational and architectural line. The AMD Radeon HD 7770M, a GCN 1.0 part from the London generation, achieves a Geekbench Metal score of 13,536, placing it at the 54th percentile of all GPUs in the database. The AMD Radeon Pro WX 3200, built on GCN 4.0 with the Polaris 23 chip, records a Geekbench OpenCL score of 11,228, sitting at the 50th percentile. Because the two products are measured with different benchmark APIs, direct score comparison is not meaningful; instead, the verdict rests on their relative standing among peers and their architectural capabilities.

For users seeking a legacy mobile part with strong per-watt characteristics, the HD 7770M is the pick. Its 32 W TDP, 1,500 million transistors on a 28 nm TSMC process, and 691.2 GFLOPS of FP32 performance delivered a score that sits within 0.1% of the AMD Radeon RX 9070 XT and 0.2% above the NVIDIA GeForce GTX 570 in the database's nearest-rival list. The Pro WX 3200, meanwhile, is the appropriate choice for professional workstation tasks that demand modern API support, higher memory capacity, and faster memory bandwidth. It offers 4 GB of GDDR5, 96.00 GB/s of bandwidth, Vulkan 1.3 support, and four mini-DisplayPort 1.4a outputs, which the HD 7770M cannot match. The HD 7770M's display outputs are listed as "Portable Device Dependent," meaning its connectivity is tied to the laptop chassis rather than a fixed set of ports.

The data indicates that neither part is a performance leader in absolute terms. The HD 7770M's nearest rivals cluster tightly around its score: the RX 9070 XT at 13,543 (0.1% higher), the GTX 570 at 13,515 (0.2% lower), the P106-090 at 13,470 (0.5% lower), and the Radeon Pro 555 at 13,407 (1% lower). The Pro WX 3200's nearest rivals are similarly close: the FirePro W4300 at 11,225 (essentially tied), the GTX 780M at 11,261 (0.3% higher), and two NVIDIA RTX PRO 6000 variants at 11,088 (1.3% lower). In both cases, the benchmark results place these cards in a narrow band of performance, meaning the decision should be driven by feature set, API coverage, and workload rather than raw score differences.

Architecture Differences

The two GPUs represent two distinct generations of AMD's Graphics Core Next architecture. The HD 7770M uses GCN 1.0, built on the Chelsea chip at TSMC's 28 nm process. It integrates 1,500 million transistors on a 123 mm² die, yielding a transistor density of 12.2 million transistors per square millimeter. The Pro WX 3200 moves to GCN 4.0 with the Polaris 23 chip, fabricated by GlobalFoundries on a 14 nm process. It packs 2,200 million transistors into a smaller 103 mm² die, producing a transistor density of 21.4 million per square millimeter. The newer node and denser layout give the Pro WX 3200 a structural advantage in efficiency per area, though its TDP is higher at 65 W compared to 32 W for the HD 7770M.

Compute resources differ as well. The HD 7770M has 512 shading units, 32 texture mapping units, and 16 raster output units. The Pro WX 3200 increases shading units to 640 while keeping 32 TMUs and 16 ROPs. Pixel rate jumps from 10.80 GPixel/s on the HD 7770M to 20.72 GPixel/s on the Pro WX 3200, and texture rate more than doubles from 21.60 GTexel/s to 41.44 GTexel/s. FP32 throughput scales accordingly: 691.2 GFLOPS on the older part versus 1.658 TFLOPS on the newer one. The Pro WX 3200 also supports FP16 at a 1:1 ratio (1.658 TFLOPS), while the HD 7770M has no recorded FP16 capability.

Memory architecture is similar in bus width but different in capacity and speed. Both use a 128-bit GDDR5 interface. The HD 7770M is configured with 1,024 MB of memory running at 1000 MHz (4 Gbps effective), producing 64.00 GB/s of bandwidth. The Pro WX 3200 ships with 4 GB of GDDR5 at 1500 MHz (6 Gbps effective), reaching 96.00 GB/s. The interface also changes: the HD 7770M uses PCIe 2.0 x16, while the Pro WX 3200 uses PCIe 3.0 x8.

API support marks a clear generational split. The HD 7770M supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. The Pro WX 3200 supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.3. The higher DirectX feature level and newer Vulkan revision on the Pro WX 3200 make it the more forward-compatible choice for modern software. Both parts are end-of-life in the database, with the HD 7770M released on 2012-04-23 and the Pro WX 3200 on 2019-07-01.

FAQ

Q: Which GPU has more shading units?

A: The AMD Radeon Pro WX 3200 has 640 shading units, compared to 512 on the AMD Radeon HD 7770M.

Q: What is the memory capacity difference?

A: The HD 7770M has 1,024 MB of GDDR5, while the Pro WX 3200 has 4 GB of GDDR5. Both use a 128-bit memory bus.

Q: Which card offers newer API support?

A: The Pro WX 3200 supports DirectX 12 (12_0) and Vulkan 1.3, whereas the HD 7770M supports DirectX 12 (11_1) and Vulkan 1.2.170.

Q: How do their benchmark scores compare to nearby rivals?

A: The HD 7770M scores 13,536 in Geekbench Metal, within 0.1% of the AMD Radeon RX 9070 XT and 0.2% above the NVIDIA GeForce GTX 570. The Pro WX 3200 scores 11,228 in Geekbench OpenCL, essentially tied with the AMD FirePro W4300 and 0.3% below the NVIDIA GeForce GTX 780M.

Q: What is the TDP of each card?

A: The HD 7770M has a TDP of 32 W. The Pro WX 3200 has a TDP of 65 W and lists a suggested PSU of 250 W.

Q: What display outputs does each card provide?

A: The Pro WX 3200 provides 4x mini-DisplayPort 1.4a outputs. The HD 7770M's display outputs are listed as "Portable Device Dependent," meaning they vary by the host laptop.

Specification Differences

The two cards differ across nearly every major specification category. The HD 7770M uses the Chelsea chip on GCN 1.0 architecture from the London (HD 7700M) generation, while the Pro WX 3200 uses the Polaris 23 chip on GCN 4.0 architecture from the Radeon Pro Polaris (WX x200) generation. Process node shifts from 28 nm at TSMC to 14 nm at GlobalFoundries. Transistor count rises from 1,500 million to 2,200 million, while die size shrinks from 123 mm² to 103 mm², improving transistor density from 12.2M / mm² to 21.4M / mm².

Memory clocks move from 1000 MHz (4 Gbps effective) on the HD 7770M to 1500 MHz (6 Gbps effective) on the Pro WX 3200. Memory size increases from 1,024 MB to 4 GB, and bandwidth rises from 64.00 GB/s to 96.00 GB/s. Shading units increase from 512 to 640; TMUs stay at 32 and ROPs stay at 16. Pixel rate doubles from 10.80 GPixel/s to 20.72 GPixel/s, and texture rate nearly doubles from 21.60 GTexel/s to 41.44 GTexel/s. FP32 output jumps from 691.2 GFLOPS to 1.658 TFLOPS, with FP16 added on the Pro WX 3200 at 1.658 TFLOPS (1:1).

TDP rises from 32 W to 65 W. The Pro WX 3200 is a single-slot card with no power connectors and a suggested PSU of 250 W; the HD 7770M has no recorded slot width, power connector, or PSU recommendation. Bus interface changes from PCIe 2.0 x16 to PCIe 3.0 x8. Display outputs shift from portable-device-dependent to 4x mini-DisplayPort 1.4a. DirectX support moves from 12 (11_1) to 12 (12_0), and Vulkan from 1.2.170 to 1.3. The Pro WX 3200 has physical dimensions of 167 mm (6.6 inches) in length and 69 mm (2.7 inches) in height; the HD 7770M has none recorded. Release dates differ by seven years: the HD 7770M launched on 2012-04-23, the Pro WX 3200 on 2019-07-01. The Pro WX 3200 carries a launch MSRP of 199 USD; the HD 7770M has no recorded launch MSRP.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between these two cards. Instead, each has a single recorded benchmark using a different API. The HD 7770M posts a Geekbench Metal score of 13,536, landing at the 54th percentile of all GPUs. Its nearest rival, the AMD Radeon RX 9070 XT, scores 13,543, a 0.1% difference. The NVIDIA GeForce GTX 570 trails by 0.2% at 13,515, and the NVIDIA P106-090 comes in at 13,470, 0.5% lower. The AMD Radeon Pro 555 is the farthest of the four at 13,407, 1% below the HD 7770M.

The Pro WX 3200 records a Geekbench OpenCL score of 11,228, placing it at the 50th percentile. Its nearest rival, the AMD FirePro W4300, scores 11,225, a negligible 0% delta. The NVIDIA GeForce GTX 780M scores 11,261, 0.3% higher. Two NVIDIA workstation parts, the RTX PRO 6000 Blackwell Max-Q and RTX PRO 6000D Blackwell Max-Q, both score 11,088, sitting 1.3% below the Pro WX 3200.

Since the two cards were tested with different APIs, the scores cannot be directly compared as a measure of relative speed. What the data does show is that each card competes within a tight cluster of similarly performing GPUs. The HD 7770M's cluster sits at a higher raw score than the Pro WX 3200's, but the APIs differ, and the percentile rankings (54th versus 50th) reflect different distributions. The Pro WX 3200's architectural advantages, particularly its 1.658 TFLOPS FP32 throughput, 96.00 GB/s bandwidth, and 4 GB memory, are not fully captured by a single OpenCL score, just as the HD 7770M's Metal score does not reflect its older API set.

Where Each One Wins

The HD 7770M wins on power efficiency and legacy compatibility. Its 32 W TDP is less than half the Pro WX 3200's 65 W, making it the better fit for thin-and-light laptops where thermal and power budgets are tight. Its GCN 1.0 architecture and PCIe 2.0 x16 interface align with older mobile platforms, and its 1,024 MB memory footprint matches the expectations of 2012-era notebooks. The Geekbench Metal score of 13,536 at the 54th percentile suggests it holds up well in Metal-based workloads relative to its peers, and its nearest-rival margins are narrow, with the closest competitor only 0.1% ahead.

The Pro WX 3200 wins on capacity, bandwidth, compute throughput, and modern I/O. Its 4 GB GDDR5 frame buffer is four times larger, its 96.00 GB/s bandwidth is 50% higher, and its FP32 throughput of 1.658 TFLOPS is more than double the HD 7770M's 691.2 GFLOPS. It adds FP16 support at a 1:1 ratio, which the HD 7770M lacks. The PCIe 3.0 x8 interface, while narrower in lanes, uses a newer standard. Four mini-DisplayPort 1.4a outputs make it a practical choice for multi-monitor workstation setups, and its DirectX 12 (12_0) and Vulkan 1.3 support cover a wider range of modern applications. The card's single-slot design, lack of power connectors, and 250 W suggested PSU make it straightforward to integrate into a desktop workstation.

For use-case selection, the data points to the HD 7770M for legacy mobile deployments where low power draw and Metal performance are priorities, and to the Pro WX 3200 for professional environments that need more memory, higher bandwidth, newer APIs, and fixed multi-display output. Neither card dominates in absolute benchmark terms; their percentile positions (54th and 50th) are close, and their nearest rivals are all within a few percent. The choice hinges on which specification gaps matter more for the intended workload.