AMD Radeon HD 8750M vs AMD Radeon R7 M440 Comparison

FAQ

Q: Which GPU is faster in OpenCL compute workloads?

A: The AMD Radeon HD 8750M scores 5970 in Geekbench OpenCL, which is 14.5% higher than the AMD Radeon R7 M440's 5214. The HD 8750M wins the only head-to-head benchmark recorded.

Q: How does the Radeon R7 M440 compare against its closest rivals?

A: The R7 M440 averages 5483 across all benchmarks. It sits 0.3% above the NVIDIA Quadro M4000 (5467), 0.7% above the AMD Radeon 610M (5444), 0.3% below the NVIDIA GeForce GTX 765M (5501), and 0.5% below the NVIDIA GeForce MX130 (5508).

Q: What is the memory capacity difference between these two GPUs?

A: The Radeon R7 M440 comes with 4096 MB (4 GB) of DDR3 memory, while the Radeon HD 8750M has only 1024 MB (1 GB) of DDR3 memory. However, the HD 8750M uses a 128-bit bus versus the R7 M440's 64-bit bus.

Q: Which GPU has higher memory bandwidth?

A: The Radeon HD 8750M delivers 28.80 GB/s of bandwidth, exactly double the R7 M440's 14.40 GB/s. Both run memory at 900 MHz with 1800 Mbps effective speed.

Q: Do these GPUs support different DirectX versions?

A: Yes. The Radeon R7 M440 supports DirectX 12 (12_0), while the Radeon HD 8750M supports DirectX 12 (11_1). Both support OpenGL 4.6 and Vulkan 1.2.170.

Q: Which GPU has more shading units and texture units?

A: The Radeon HD 8750M has 384 shading units and 24 texture mapping units. The Radeon R7 M440 has 320 shading units and 20 texture mapping units. Both have 8 ROPs.

Architecture Differences

The two GPUs come from different architectural generations despite sharing the same manufacturer and process node. The Radeon HD 8750M is built on GCN 1.0 architecture with the Mars chip, belonging to the Solar System generation (HD 8700M series). The Radeon R7 M440 uses the newer GCN 3.0 architecture with the Meso chip, part of the Gem System generation (R7 M400 series).

Both are fabricated on TSMC's 28 nm process, but the transistor counts diverge significantly. The HD 8750M packs 950 million transistors on a 77 mm² die, yielding a transistor density of 12.3 million per mm². The R7 M440 contains 1,550 million transistors on a 125 mm² die, with a density of 12.4 million per mm². The larger die and higher transistor count reflect the architectural evolution, though the R7 M440 does not translate that into higher raw performance.

The R7 M440 supports FP16 compute at a 1:1 ratio with FP32, outputting 570.2 GFLOPS for both precision types. The HD 8750M lists FP32 at 633.6 GFLOPS with no FP16 capability recorded. The R7 M440 is designated as an IGP (integrated graphics processor) with portable-device-dependent display outputs, whereas the HD 8750M has no such classification.

Clock behavior also differs. The HD 8750M has a base clock of 775 MHz and a boost clock of 825 MHz. The R7 M440 does not list base or boost clocks in the database, only its memory clock. The HD 8750M's predecessor is London and its successor is Gem System, while the R7 M440's predecessor is Solar System and its successor is Polaris Mobile, confirming the generational handoff.

Both GPUs use the PCIe 3.0 x8 bus interface. The HD 8750M was released on February 25, 2013, while the R7 M440 arrived on May 14, 2016. Both are end-of-life products.

Where Each One Wins

The AMD Radeon HD 8750M wins in raw compute throughput. Its OpenCL score of 5970 tops the R7 M440's 5214 by 14.5%, making it the stronger choice for general-purpose GPU compute tasks, OpenCL acceleration, and any workload that leverages shading units and texture units efficiently. The HD 8750M also has double the memory bandwidth (28.80 GB/s versus 14.40 GB/s), which benefits memory-intensive operations despite the smaller 1 GB frame buffer.

The AMD Radeon R7 M440 wins on capacity and modern API support. Its 4 GB frame buffer is four times larger, allowing it to hold larger textures and datasets in memory, which can matter for certain workloads that fit within the 64-bit bus's lower bandwidth. It supports DirectX 12 (12_0), a newer feature level than the HD 8750M's DirectX 12 (11_1), which may enable additional rendering features in titles that use DX12 Ultimate-level functionality. The R7 M440 also records a Vulkan score of 5751 in Geekbench, a test the HD 8750M does not have in its benchmark list.

The R7 M440 also has a higher pixel rate at 7.128 GPixel/s versus 6.600 GPixel/s, a 8% advantage in fill-rate-limited scenarios. Its texture rate is lower at 17.82 GTexel/s versus 19.80 GTexel/s, so the HD 8750M retains the edge in texture-heavy scenes.

For users prioritizing compute performance and bandwidth, the HD 8750M is the pick. For users needing more memory capacity, newer DirectX support, and integrated graphics power efficiency, the R7 M440 has the advantage.

Specification Differences

The two GPUs differ across nearly every major specification category:

• Chip: Mars (HD 8750M) versus Meso (R7 M440)
• Architecture: GCN 1.0 versus GCN 3.0
• Generation: Solar System (HD 8700M) versus Gem System (R7 M400)
• Transistors: 950 million versus 1,550 million
• Die size: 77 mm² versus 125 mm²
• Base clock: 775 MHz (HD 8750M) versus not listed (R7 M440)
• Boost clock: 825 MHz (HD 8750M) versus not listed (R7 M440)
• Memory size: 1024 MB versus 4096 MB
• Memory bus width: 128 bit versus 64 bit
• Memory bandwidth: 28.80 GB/s versus 14.40 GB/s
• Shading units: 384 versus 320
• Texture mapping units: 24 versus 20
• Pixel rate: 6.600 GPixel/s versus 7.128 GPixel/s
• Texture rate: 19.80 GTexel/s versus 17.82 GTexel/s
• FP32 performance: 633.6 GFLOPS versus 570.2 GFLOPS
• FP16 performance: not listed versus 570.2 GFLOPS (1:1)
• Slot width: not listed versus IGP
• DirectX support: 12 (11_1) versus 12 (12_0)
• Release date: February 25, 2013 versus May 14, 2016
• Predecessor: London versus Solar System
• Successor: Gem System versus Polaris Mobile

Specifications that are identical include the 28 nm process node, TSMC foundry, 900 MHz memory clock with 1800 Mbps effective speed, DDR3 memory type, 8 ROPs, PCIe 3.0 x8 interface, OpenGL 4.6 support, and Vulkan 1.2.170 support.

Head-to-Head Benchmarks

The database records exactly one head-to-head benchmark between these two GPUs: Geekbench OpenCL.

In that test, the AMD Radeon HD 8750M scores 5970 against the AMD Radeon R7 M440's 5214, a 14.5% advantage. This is a decisive win for the older GPU. To put that margin in context, the HD 8750M's nearest rivals cluster tightly around it: the NVIDIA Quadro K4000 scores 5982 (0.2% higher), the NVIDIA Quadro K4000M scores 5986 (0.3% higher), the NVIDIA Quadro K620M scores 5957 (0.2% lower), and the AMD Radeon HD 8730M scores 5955 (0.3% lower). The HD 8750M sits at the 34th percentile of all GPUs, meaning roughly two-thirds of recorded GPUs outperform it.

The R7 M440's nearest rivals also sit close to its average score of 5483. The NVIDIA GeForce MX130 leads at 5508 (0.5% higher), followed by the NVIDIA GeForce GTX 765M at 5501 (0.3% higher), the NVIDIA Quadro M4000 at 5467 (0.3% lower), and the AMD Radeon 610M at 5444 (0.7% lower). The R7 M440 sits at the 32nd percentile of all GPUs, two points below the HD 8750M.

The R7 M440 also has a Geekbench Vulkan score of 5751, but no comparable Vulkan result exists for the HD 8750M, so a direct comparison in that API is not possible. The HD 8750M's average benchmark score equals its OpenCL score at 5970, since that is its only recorded test. The R7 M440's average of 5483 is a blend of its OpenCL (5214) and Vulkan (5751) results.

The 14.5% OpenCL gap is substantial. It exceeds the entire spread of the HD 8750M's nearest rivals, which range from 5955 to 5986, a span of just 31 points. The R7 M440's own rival cluster covers a range from 5444 to 5508, a span of 64 points. The HD 8750M's advantage over the R7 M440 (756 points) is more than ten times larger than the gap between the HD 8750M and its closest competitor.

In summary, the HD 8750M dominates the single recorded benchmark, but the R7 M440 counters with a newer architecture, four times the memory capacity, and a higher DirectX feature level. The data shows a clear compute-performance winner in the HD 8750M, while the R7 M440 targets different priorities.