AMD Radeon R7 M340 vs Intel UHD Graphics P630 Comparison

Intel UHD Graphics P630 and AMD Radeon R7 M340 are both end-of-life mobile graphics solutions, but benchmark results place them in adjacent performance tiers, with the Intel part holding a clear edge in the two available compute tests. The P630 wins both head-to-head benchmarks, leading by 3.6% in Geekbench OpenCL and by a more substantial 8.4% in Geekbench Vulkan, giving it a 2-0 win record over the Radeon. While the R7 M340 offers dedicated memory and a higher raw FP32 throughput on paper, the Intel integrated solution posts the higher average benchmark score of 5370 versus 5063, a difference that aligns with its 31st percentile ranking among all GPUs compared to the Radeon's 30th.

Head-to-Head Benchmarks

The two available benchmarks show a consistent, if modest, victory for Intel. In the Geekbench OpenCL test, the P630 scores 5111 against the R7 M340's 4932, a 3.6% advantage. This is a narrow margin, placing the two parts in the same competitive class, but the result is unambiguous: Intel takes the win. The Vulkan test tells a clearer story. Here, the P630 scores 5628 versus 5193 for the AMD part, a 8.4% lead. This larger gap in Vulkan suggests the Intel architecture handles this modern API more efficiently relative to its older GCN 3.0 rival.

The average benchmark scores reinforce this order. Intel's P630 averages 5370 across tests, while the R7 M340 averages 5063. The difference of roughly 6% is consistent with the individual test results. The Intel part's nearest rivals include the NVIDIA GeForce 840M (avg score 5322) and the AMD Radeon R7 M365X (avg score 5416), with the P630 sitting just 0.9% above the former and 0.8% below the latter. The R7 M340, by contrast, sits exactly level with the AMD Radeon R7 240 (avg score 5063, deltaPct 0) and is 0.6% ahead of the AMD FirePro W4170M (avg score 5034). The data shows a clear hierarchy: the P630 competes with slightly faster discrete mobile parts, while the R7 M340 matches entry-level discrete cards from its own generation.

Notably, the R7 M340's higher theoretical FP32 throughput—653.4 GFLOPS versus 460.8 GFLOPS for the P630—does not translate into benchmark victories. The Intel part's 192 shading units, despite being fewer than the AMD's 320, deliver better real-world compute results in these tests. Similarly, the R7 M340's dedicated 2 GB of DDR3 memory with 16.00 GB/s bandwidth does not overcome the P630's system-shared memory configuration in this workload. The benchmark evidence overrides the specification sheet.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. Intel's P630 is built on the Generation 9.5 architecture, using a 14 nm+++ process node from Intel's own foundry, and is based on the Comet Lake GT2 chip. It is an integrated graphics processor (IGP) with a Ring Bus interface, meaning it shares system memory rather than having its own dedicated VRAM. The R7 M340, in contrast, uses AMD's GCN 3.0 architecture, manufactured on a 28 nm process by TSMC, with the Meso chip. It is a discrete mobile part with 1,550 million transistors on a 125 mm² die, yielding a transistor density of 12.4M per mm².

The memory subsystems could not be more different. The P630 uses system-shared memory, with the bus width, type, and size all listed as "System Shared" and bandwidth described as "System Dependent." The R7 M340 has a fixed 2 GB of DDR3 memory on a 64-bit bus, delivering 16.00 GB/s of bandwidth. This gives the AMD part a deterministic memory performance profile, while the Intel part's performance varies with the host system's RAM. Clock speeds also differ: the P630 runs at a 350 MHz base with a 1200 MHz boost, while the R7 M340 runs at 943 MHz base and 1021 MHz boost.

Compute unit configurations reveal a trade-off. The P630 has 192 shading units, 24 texture mapping units (TMUs), and only 3 raster operation units (ROPs). The R7 M340 has 320 shading units, 20 TMUs, and 8 ROPs. The AMD part has more shaders and ROPs, but fewer TMUs. This results in different rate limits: the P630 achieves a pixel rate of 3.600 GPixel/s and a texture rate of 28.80 GTexel/s, while the R7 M340 reaches 8.168 GPixel/s and 20.42 GTexel/s. The Intel part is faster at texturing, the AMD part at pixel fill. FP16 support also differs: the P630 offers 921.6 GFLOPS at FP16 with a 2:1 ratio, while the R7 M340 provides 653.4 GFLOPS at FP16 with a 1:1 ratio.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The Intel UHD Graphics P630 has an average benchmark score of 5370, compared to 5063 for the AMD Radeon R7 M340.

Q: How much faster is the Intel part in the Vulkan benchmark?

A: The P630 scores 5628 in Geekbench Vulkan, which is 8.4% higher than the R7 M340's score of 5193.

Q: Does the AMD Radeon R7 M340 have more shading units?

A: Yes, the R7 M340 has 320 shading units, while the Intel P630 has 192.

Q: What memory configuration does each GPU use?

A: The Intel P630 uses system-shared memory with system-dependent bandwidth, while the AMD R7 M340 has 2 GB of dedicated DDR3 memory on a 64-bit bus with 16.00 GB/s bandwidth.

Q: What is the process node difference between the two?

A: The Intel P630 is built on a 14 nm+++ process at Intel, while the AMD R7 M340 uses a 28 nm process at TSMC.

Q: Which GPU has a higher percentile ranking among all GPUs?

A: The Intel P630 ranks in the 31st percentile, while the AMD R7 M340 ranks in the 30th percentile.

The Verdict

The benchmark data is unambiguous: the Intel UHD Graphics P630 is the faster GPU in this comparison. It wins both head-to-head tests, holds a higher average benchmark score (5370 vs 5063), and ranks one percentile higher among all GPUs (31st vs 30th). The R7 M340's advantages in shading units (320 vs 192), pixel rate (8.168 vs 3.600 GPixel/s), and dedicated memory bandwidth do not overcome the P630's performance in OpenCL and Vulkan compute workloads. For raw compute benchmarks, choose the Intel part.

The R7 M340 is not without merit. Its dedicated 2 GB of VRAM and higher pixel fill rate suggest it may handle certain traditional rasterization tasks differently, but the data provided does not include gaming benchmarks to confirm this. In the tests that exist, the Intel part leads by 3.6% in OpenCL and 8.4% in Vulkan. The R7 M340's nearest rival is the AMD Radeon R7 240 (deltaPct 0), while the P630's rivals include the NVIDIA GeForce 840M (deltaPct 0.9), placing the Intel part in a slightly higher performance tier. The verdict is straightforward: the P630 is the better performer in this head-to-head.

Specification Differences

The two GPUs differ across nearly every core specification. The process node is 14 nm+++ for Intel versus 28 nm for AMD. The Intel part is an IGP with a Ring Bus interface, while the AMD part uses PCIe 3.0 x8. The P630 has 192 shading units, 24 TMUs, and 3 ROPs; the R7 M340 has 320 shading units, 20 TMUs, and 8 ROPs. Clock speeds are 350 MHz base / 1200 MHz boost for Intel versus 943 MHz base / 1021 MHz boost for AMD. Memory is system-shared for Intel versus 2 GB DDR3 on a 64-bit bus for AMD. Pixel rate is 3.600 GPixel/s versus 8.168 GPixel/s; texture rate is 28.80 GTexel/s versus 20.42 GTexel/s. FP32 is 460.8 GFLOPS versus 653.4 GFLOPS, and FP16 is 921.6 GFLOPS (2:1) versus 653.4 GFLOPS (1:1). The TDP is 15 W for Intel, while no TDP is listed for AMD. The AMD part has a die size of 125 mm² and 1,550 million transistors, while the Intel part lists no die or transistor data. DirectX support is 12_1 for Intel versus 12_0 for AMD, and Vulkan is 1.3 versus 1.2.170. The P630 was released on 2020-05-12, while the R7 M340 was released on 2015-05-04.

Where Each One Wins

The Intel UHD Graphics P630 wins in compute benchmarks. It takes both head-to-head tests, with its largest margin in Vulkan (8.4%). Its average benchmark score of 5370 places it ahead of the R7 M340 and level with discrete parts like the NVIDIA GeForce 840M and AMD Radeon R7 M365X. The P630 also wins on power efficiency, with a 15 W TDP listed, and on modern API support, offering DirectX 12_1 and Vulkan 1.3. Its higher texture rate (28.80 GTexel/s) suggests it may be better suited for texture-heavy workloads.

The AMD Radeon R7 M340 wins on paper in several raw specification categories. It has more shading units (320 vs 192), a higher pixel rate (8.168 vs 3.600 GPixel/s), and dedicated memory with a fixed 16.00 GB/s bandwidth. It also has a higher FP32 throughput (653.4 vs 460.8 GFLOPS). These specs could favor pixel-heavy tasks, but the benchmark data does not include such tests. In the two compute benchmarks available, the R7 M340 loses both. Its nearest rival is the AMD Radeon R7 240, which it exactly matches, while its 30th percentile ranking places it at the bottom of the performance tier shared with the P630. For users relying on the provided benchmark scores, the Intel part is the clear choice; the R7 M340's advantages remain theoretical in the absence of supporting test data.