AMD Radeon R7 M460 vs NVIDIA Quadro K620M Comparison

Where Each One Wins

The benchmark data in this comparison paints a straightforward picture. The AMD Radeon R7 M460 records a Geekbench OpenCL score of 6612, while the NVIDIA Quadro K620M trails at 5957. That is an 11% advantage for the AMD part in the only recorded test. The R7 M460 takes the single head-to-head win.

Looking at how each card sits relative to its nearest rivals, the AMD part holds its ground in a tight cluster. It sits 0.5% above the AMD Radeon HD 7730M, 0.9% above the Intel UHD Graphics P750, and 1.5% above the NVIDIA GeForce GTX 670M. The only rival ahead of it is the NVIDIA GeForce GT 1010, which beats it by 1.3%. This places the R7 M460 in the 38th percentile across all GPUs in the database.

The NVIDIA Quadro K620M, meanwhile, lands in a different neighborhood. It is essentially level with the AMD Radeon HD 8730M at a 0% delta, 0.2% behind the AMD Radeon HD 8750M, and 0.4% behind the NVIDIA Quadro K4000. It does edge out the Intel UHD Graphics 730 by 0.5%. The K620M sits in the 34th percentile across all GPUs, four percentage points below the R7 M460.

For workloads that rely on raw OpenCL compute throughput, the AMD Radeon R7 M460 is the clear winner. The data does not include gaming benchmarks, professional application tests, or power draw measurements, so any use-case conclusions must stay within the bounds of what the recorded scores show. The R7 M460 wins the compute-oriented test, and that is where its advantage lies.

Architecture Differences

The two GPUs come from different architectural lineages. The AMD Radeon R7 M460 uses the GCN 3.0 architecture on the Meso chip, while the NVIDIA Quadro K620M uses the Maxwell architecture on the GM108S chip. Both are manufactured on a 28 nm process at TSMC, so the process node is identical.

The transistor counts differ notably. The AMD chip packs 1,550 million transistors on a 125 mm² die, giving it a transistor density of 12.4M per mm². The NVIDIA chip uses 1,020 million transistors on a 77 mm² die, which works out to a higher density of 13.2M per mm². The AMD die is substantially larger and carries more transistors overall, but the NVIDIA design is denser per square millimeter.

Shading unit counts are equal at 384 for both cards. The AMD part has 24 texture mapping units and 8 ROPs, while the NVIDIA part has 16 texture mapping units and 8 ROPs. That gives the AMD card a 50% advantage in texture units, which contributes to its higher texture fill rate. The R7 M460 records a texture rate of 24.58 GTexel/s, while the K620M manages 17.98 GTexel/s. Pixel rates are closer: the AMD card delivers 8.192 GPixel/s, and the NVIDIA card delivers 8.992 GPixel/s, a small lead for the Quadro.

Clock behavior differs as well. The NVIDIA card runs a base clock of 1029 MHz and a boost clock of 1124 MHz. The AMD card starts at a lower 730 MHz base but boosts to 1024 MHz. Despite the lower clocks, the AMD card's wider texture pipeline helps it in fill-rate comparisons. For floating-point compute, the NVIDIA card records 863.2 GFLOPS of FP32 throughput, while the AMD card records 786.4 GFLOPS. The AMD card also supports FP16 at a 1:1 ratio with 786.4 GFLOPS, while the NVIDIA card has no recorded FP16 capability.

Memory configurations show clear differences. Both cards have 2 GB of VRAM and a 64-bit memory bus. The AMD R7 M460 uses GDDR5 at 1125 MHz with 4.5 Gbps effective speed, producing 36.00 GB/s of bandwidth. The NVIDIA K620M uses DDR3 at 1001 MHz with 2 Gbps effective speed, producing just 16.02 GB/s of bandwidth. That is a 2.25x bandwidth advantage for the AMD card, a significant gap that helps explain its OpenCL score advantage.

Power and form factor details are only recorded for the NVIDIA card. The K620M carries a 30 W TDP, uses an MXM Module slot width, has no power connectors, and uses an MXM-A (3.0) bus interface. Its display outputs are listed as portable device dependent. The AMD card's TDP, slot width, and power connectors are not recorded in the database. The AMD card uses a PCIe 3.0 x8 bus interface.

API support also diverges. The AMD card supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170. The NVIDIA card supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The NVIDIA part has a newer Vulkan version, while the AMD part has a higher DirectX feature level.

Head-to-Head Benchmarks

The only recorded head-to-head benchmark is Geekbench OpenCL, and the AMD Radeon R7 M460 wins it decisively. The AMD card scores 6612, and the NVIDIA Quadro K620M scores 5957. The delta is 11% in favor of the AMD card.

To put that 11% gap in context, the AMD card's nearest rivals cluster within a narrow band. The Radeon HD 7730M scores 6581, just 0.5% behind. The Intel UHD Graphics P750 scores 6554, 0.9% behind. The GeForce GTX 670M scores 6513, 1.5% behind. Only the GeForce GT 1010 at 6698 sits ahead of the R7 M460, and only by 1.3%. This means the AMD card is competitive with a range of older and newer parts, slotting into the middle of its peer group.

The NVIDIA Quadro K620M's rivals tell a similar story of tight competition at a lower performance level. The Radeon HD 8730M scores 5955, a 0% delta. The Radeon HD 8750M scores 5970, 0.2% ahead. The Quadro K4000 scores 5982, 0.4% ahead. The Intel UHD Graphics 730 scores 5929, 0.5% behind. The K620M is firmly planted in the 5900 to 6000 range, roughly 600 points below where the R7 M460 operates.

The texture and memory differences help explain the benchmark gap. The AMD card's 36.00 GB/s memory bandwidth is more than double the NVIDIA card's 16.02 GB/s. The AMD card also has 24 TMUs versus 16, a 50% advantage in texture units. Even though the NVIDIA card has higher FP32 throughput at 863.2 GFLOPS versus 786.4 GFLOPS, the AMD card still wins the OpenCL test, suggesting that memory bandwidth and texture throughput play a larger role in this particular workload.

The percentile rankings reflect the same ordering. The R7 M460 sits at the 38th percentile across all GPUs, while the K620M sits at the 34th. That four-point gap in percentile terms corresponds to the 11% score difference. In a field where most adjacent rivals are within a percentage point or two, an 11% lead is substantial.

FAQ

Q: Which GPU has the higher OpenCL benchmark score?

A: The AMD Radeon R7 M460 scores 6612 in Geekbench OpenCL, while the NVIDIA Quadro K620M scores 5957. The AMD card leads by 11%.

Q: Do both cards use the same process node?

A: Yes, both are manufactured by TSMC on a 28 nm process. The AMD R7 M460 uses the GCN 3.0 architecture on the Meso chip, and the NVIDIA K620M uses the Maxwell architecture on the GM108S chip.

Q: How do the memory subsystems compare?

A: Both cards have 2 GB of VRAM and a 64-bit bus. The AMD card uses GDDR5 with 36.00 GB/s bandwidth, while the NVIDIA card uses DDR3 with 16.02 GB/s bandwidth. The AMD card has more than double the memory bandwidth.

Q: Which card has higher floating-point compute?

A: The NVIDIA Quadro K620M records 863.2 GFLOPS of FP32 throughput, higher than the AMD R7 M460's 786.4 GFLOPS. The AMD card also supports FP16 at 786.4 GFLOPS, while the NVIDIA card has no recorded FP16 capability.

Q: What is the transistor density difference between the two chips?

A: The AMD Meso chip has 1,550 million transistors on a 125 mm² die, for a density of 12.4M per mm². The NVIDIA GM108S chip has 1,020 million transistors on a 77 mm² die, for a density of 13.2M per mm².

Q: How do the two cards rank against all GPUs in the database?

A: The AMD R7 M460 sits in the 38th percentile, while the NVIDIA K620M sits in the 34th percentile. The AMD card's nearest rivals include the GeForce GT 1010 (1.3% ahead), while the NVIDIA card's nearest rival is the Radeon HD 8730M (0% delta).

The Verdict

The data points in one direction for compute workloads. The AMD Radeon R7 M460 outperforms the NVIDIA Quadro K620M by 11% in Geekbench OpenCL, the only recorded benchmark. It also carries a significant memory bandwidth advantage at 36.00 GB/s versus 16.02 GB/s, and it has more texture units at 24 versus 16.

The NVIDIA Quadro K620M does have strengths in the recorded specifications. Its FP32 throughput is higher at 863.2 GFLOPS versus 786.4 GFLOPS. It has a higher pixel rate at 8.992 GPixel/s versus 8.192 GPixel/s. It also has a lower recorded TDP at 30 W, which may matter in compact mobile workstations. Its MXM-A form factor and lack of power connectors are notable for integration flexibility.

However, the benchmark result is what ultimately separates these two end-of-life mobile GPUs. The AMD R7 M460 lands at the 38th percentile, four points above the K620M's 34th percentile. Its nearest rivals include parts like the GeForce GTX 670M and GeForce GT 1010, which puts it in a slightly higher performance tier than the K620M's peer group of Radeon HD 8730M and Quadro K4000 class parts.

For users prioritizing raw OpenCL compute performance, the AMD Radeon R7 M460 is the stronger choice. For users who need lower power draw in an MXM module form factor, the NVIDIA Quadro K620M has the recorded specification advantage. The benchmark data does not cover gaming, professional CAD, or content creation workloads, so those use cases remain outside the scope of this analysis. Within the recorded measurements, the AMD card is the faster part.