AMD Radeon HD 8850M vs AMD Radeon R9 M265X Comparison

Head-to-Head Benchmarks

The recorded data contains one direct comparison between the AMD Radeon R9 M265X and the AMD Radeon HD 8850M, and the result is decisive. In the Geekbench OpenCL test, the R9 M265X scores 8851 points, while the HD 8850M scores 7447 points. That is a difference of 18.9 percent in favor of the newer part.

To put that into context, the R9 M265X sits at the 44th percentile among all GPUs in the database. Its nearest rivals include the AMD Radeon Pro WX 5100, which scores 8863 points, a margin of only 0.1 percent ahead. The AMD Radeon 550X is close too, with 8918 points, putting it 0.8 percent ahead. On the other side, the NVIDIA GeForce RTX 3050 A Mobile scores 8746 points, which is 1.2 percent behind the R9 M265X, and the NVIDIA GeForce GTX 460 v2 scores 8743 points, also 1.2 percent behind.

The HD 8850M, by contrast, sits at the 40th percentile. Its nearest rivals are a mixed group. The Intel UHD Graphics 750 scores 7441 points, just 0.1 percent behind. The AMD Radeon R7 350 scores 7425 points, 0.3 percent behind. The NVIDIA GeForce GTX 1650 scores 7472 points, which is 0.3 percent ahead of the HD 8850M. The Intel Arc A310 scores 7550 points, 1.4 percent ahead.

The headline number is the 18.9 percent gap between the two AMD mobile parts. That is a substantial margin in a single benchmark, and it places the R9 M265X in a completely different performance tier. The HD 8850M is not just slightly slower; it is nearly one-fifth slower in raw compute performance.

Looking at the distribution of wins, the R9 M265X takes the sole benchmark victory. The HD 8850M does not win any of the recorded tests. This is a clean sweep in the head-to-head data, with no ambiguous results or mixed signals.

Where Each One Wins

The R9 M265X wins in the only measured category: OpenCL compute performance. The 8851 score versus 7447 represents a clear advantage for workloads that leverage general-purpose GPU compute, such as OpenCL-accelerated applications, image processing, and certain scientific or engineering tasks. The 18.9 percent lead means that in any compute-bound scenario, the R9 M265X should complete tasks noticeably faster.

The HD 8850M, while losing the compute test, still has a role. Its 7447 score puts it within striking distance of modern integrated graphics. The Intel UHD Graphics 750 is only 0.1 percent behind, and the AMD Radeon R7 350 is 0.3 percent behind. That means the HD 8850M is competitive with entry-level and integrated solutions of its era, but it is not competitive with the R9 M265X.

For users who prioritize compute performance, the choice is obvious. The R9 M265X delivers a meaningful uplift. For users who only need basic acceleration, the HD 8850M is adequate, but the data shows no scenario where it outperforms its successor.

The wins column tells the story: one win for the R9 M265X, zero for the HD 8850M. There is no use-case split that favors the older card in the recorded measurements.

Architecture Differences

Both GPUs are built on the same fundamental design. They share the Venus chip, the GCN 1.0 architecture, a 28 nm process node from TSMC, 1,500 million transistors, and a die size of 123 mm². The transistor density is identical at 12.2 million transistors per square millimeter.

The clock speeds are also identical. Both run at a base clock of 575 MHz and a boost clock of 625 MHz. Memory clocks match at 1000 MHz with 4 Gbps effective data rate. Both have 2 GB of GDDR5 memory on a 128-bit bus, yielding the same 64.00 GB/s of bandwidth.

The compute resources are unchanged as well. Each GPU has 640 shading units, 40 texture mapping units, and 16 raster operation units. The pixel rate is 10.00 GPixel/s and the texture rate is 25.00 GTexel/s for both. The FP32 performance is identical at 800.0 GFLOPS.

The API support matches too. Both support DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. Both use a PCIe 3.0 x16 bus interface.

The differences are in positioning and generation. The R9 M265X belongs to the Gem System generation, specifically the R9 M200 series. The HD 8850M belongs to the Solar System generation, specifically the HD 8800M series. The R9 M265X was released on March 20, 2014, while the HD 8850M was released on March 31, 2013, nearly a year earlier.

The production status for both is end-of-life. The HD 8850M's predecessor is listed as London, and its successor is Gem System, which is the generation that contains the R9 M265X. The R9 M265X's predecessor is Solar System, and its successor is Polaris Mobile.

The architecture data shows that the two GPUs are essentially the same silicon with different branding and release timing. The performance gap in the benchmark, however, suggests that driver maturity or other software-level factors may play a role, though the database does not provide specifics on that.

FAQ

Q: Which GPU is faster in OpenCL compute?

A: The AMD Radeon R9 M265X scores 8851 in Geekbench OpenCL, while the AMD Radeon HD 8850M scores 7447. The R9 M265X is 18.9 percent ahead.

Q: Do both GPUs have the same memory configuration?

A: Yes. Both have 2 GB of GDDR5 memory on a 128-bit bus, with 64.00 GB/s of bandwidth and a memory clock of 1000 MHz (4 Gbps effective).

Q: Are the architectural specs identical?

A: The core specifications match: 640 shading units, 40 TMUs, 16 ROPs, 800.0 GFLOPS FP32, 10.00 GPixel/s pixel rate, and 25.00 GTexel/s texture rate. Both use the Venus chip on GCN 1.0 with a 28 nm process.

Q: How does the R9 M265X compare to its nearest rivals?

A: The R9 M265X is 0.1 percent behind the AMD Radeon Pro WX 5100, 0.8 percent behind the AMD Radeon 550X, and 1.2 percent ahead of both the NVIDIA GeForce RTX 3050 A Mobile and the NVIDIA GeForce GTX 460 v2.

Q: How does the HD 8850M compare to its nearest rivals?

A: The HD 8850M is 0.1 percent ahead of the Intel UHD Graphics 750, 0.3 percent ahead of the AMD Radeon R7 350, 0.3 percent behind the NVIDIA GeForce GTX 1650, and 1.4 percent behind the Intel Arc A310.

Q: What is the release timing difference?

A: The HD 8850M was released on March 31, 2013, and the R9 M265X was released on March 20, 2014. The R9 M265X belongs to the Gem System generation, while the HD 8850M belongs to the Solar System generation.

The Verdict

The data is unambiguous. The AMD Radeon R9 M265X is the faster GPU by a significant margin, posting an 8851 OpenCL score against the HD 8850M's 7447. That 18.9 percent advantage is large enough to matter in any compute-heavy workload.

The architectural similarity between the two parts, identical silicon with the same clocks and memory, makes the performance gap particularly notable. The R9 M265X benefits from being a later release in the Gem System generation, while the HD 8850M is an earlier Solar System part. Despite sharing the Venus chip, the newer card delivers measurably better results.

Users choosing between these two should pick the R9 M265X for any task that relies on OpenCL compute. The HD 8850M, while competitive with integrated graphics like the Intel UHD Graphics 750 and the AMD Radeon R7 350, simply cannot match its successor.

The HD 8850M remains a functional mobile GPU for basic acceleration, but the benchmark data does not support choosing it over the R9 M265X when both are available. The R9 M265X wins the only recorded test, and its percentile ranking at 44 versus 40 reflects the same ordering.

For anyone prioritizing compute performance, the R9 M265X is the clear recommendation. For anyone constrained to the HD 8850M, the performance is adequate for entry-level tasks, but the expectation should be set accordingly: it trails its successor by nearly 19 percent.