AMD Radeon R5 M240 vs NVIDIA Quadro K620 Comparison

The Verdict

The recorded data separates these two end-of-life mobile and workstation graphics parts primarily by their benchmark profiles and architectural positioning. The AMD Radeon R5 M240 holds a single head-to-head benchmark win over the NVIDIA Quadro K620 in Geekbench OpenCL, scoring 6975 against 6693, a 4.2% advantage. The Quadro K620, however, counters with a much lower average benchmark score of 6282, dragged down by its additional Vulkan result of 5870, which the R5 M240 does not record. For users choosing between them strictly from the data, the R5 M240 is the better pick for compute workloads measured by OpenCL, while the Quadro K620 offers a broader feature set with its Vulkan support and a higher memory capacity of 2 GB versus 1 GB. The R5 M240 sits at the 39th percentile among all GPUs, above the Quadro K620's 36th percentile, reinforcing its edge in raw compute performance. Neither part is current; both are end-of-life, so the decision hinges on workload compatibility rather than longevity.

Architecture Differences

The AMD Radeon R5 M240 is built on the Jet chip using GCN 1.0 architecture, fabricated on a 28 nm process at TSMC with 690 million transistors on a 56 mm² die, yielding a transistor density of 12.3M per mm². The NVIDIA Quadro K620 uses the GM107 chip with Maxwell architecture, also on a 28 nm TSMC process, but packs 1,870 million transistors onto a 148 mm² die, giving a density of 12.6M per mm². The transistor count difference is substantial: the Quadro K620 carries nearly three times the transistors of the R5 M240, and its die is more than 2.5 times larger. The R5 M240 belongs to AMD's Gem System (R5 M200) generation, while the Quadro K620 is listed under the Quadro Kepler (Kx200) generation, though its architecture is Maxwell. The R5 M240 supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, while the Quadro K620 supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The R5 M240 uses a PCIe 3.0 x8 interface, whereas the Quadro K620 uses PCIe 2.0 x16. The R5 M240 has 320 shading units, 20 texture mapping units, and 8 ROPs, while the Quadro K620 has 384 shading units, 24 TMUs, and 16 ROPs. Neither part has ray tracing cores or tensor cores. The R5 M240 has no listed TDP, but the Quadro K620 is rated at 45 W with no power connectors and a suggested PSU of 200 W, and it is a single-slot card measuring 160 mm in length and 69 mm in height. The R5 M240's display outputs are not listed, while the Quadro K620 offers 1x DVI and 1x DisplayPort 1.2.

Where Each One Wins

The AMD Radeon R5 M240 wins in the only direct head-to-head benchmark recorded: Geekbench OpenCL, where it scores 6975 versus the Quadro K620's 6693, a 4.2% margin. This places it among rivals like the NVIDIA GeForce GTX 675M (6946, within 0.4%) and the NVIDIA T600 (7035, within 0.8%), showing it is competitive with much newer parts in compute tasks. Its percentile rank of 39 versus the Quadro K620's 36 further indicates a slight overall compute advantage. The R5 M240 also has a higher average benchmark score of 6975 compared to the Quadro K620's 6282, though this gap is inflated because the Quadro K620's average includes its Vulkan result of 5870, a workload the R5 M240 does not record. The Quadro K620, meanwhile, wins in memory capacity and bandwidth: it offers 2 GB of DDR3 on a 128-bit bus with 28.80 GB/s bandwidth, exactly double the R5 M240's 1 GB, 64-bit bus, and 14.40 GB/s. It also has higher pixel and texture rates: 17.98 GPixel/s and 26.98 GTexel/s versus the R5 M240's 8.240 GPixel/s and 20.60 GTexel/s. For tasks that rely on fill rates or large memory footprints, the Quadro K620 is the stronger option. Its Vulkan 1.4 API support also gives it a software compatibility edge over the R5 M240's Vulkan 1.2.170, and its PCIe 2.0 x16 interface, while older, offers a wider link than the R5 M240's PCIe 3.0 x8.

FAQ

Q: Which GPU has the higher OpenCL score?

A: The AMD Radeon R5 M240 scores 6975 in Geekbench OpenCL, while the NVIDIA Quadro K620 scores 6693, giving the R5 M240 a 4.2% lead.

Q: Does the NVIDIA Quadro K620 support Vulkan?

A: Yes, the Quadro K620 supports Vulkan 1.4 and records a Geekbench Vulkan score of 5870. The AMD Radeon R5 M240 supports Vulkan 1.2.170 but has no recorded Vulkan benchmark.

Q: How much memory does each GPU have?

A: The AMD Radeon R5 M240 has 1024 MB (1 GB) of DDR3 memory on a 64-bit bus, while the NVIDIA Quadro K620 has 2 GB of DDR3 memory on a 128-bit bus.

Q: What are the transistor counts of these two chips?

A: The R5 M240's Jet chip contains 690 million transistors on a 56 mm² die, while the Quadro K620's GM107 chip contains 1,870 million transistors on a 148 mm² die.

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

A: The AMD Radeon R5 M240 ranks at the 39th percentile, while the NVIDIA Quadro K620 ranks at the 36th percentile.

Q: What is the power requirement for the Quadro K620?

A: The Quadro K620 has a TDP of 45 W, requires no power connectors, and has a suggested PSU of 200 W. The R5 M240 has no listed TDP or power specifications.

Head-to-Head Benchmarks

The only direct comparison in the database is Geekbench OpenCL. The AMD Radeon R5 M240 produces a score of 6975, while the NVIDIA Quadro K620 produces 6693, giving the R5 M240 a 4.2% win. This is a narrow but clear margin. The R5 M240's nearest rivals in the database include the NVIDIA GeForce GTX 675M at 6946 (0.4% behind), the NVIDIA GeForce GTX 680M at 7023 (0.7% ahead), the NVIDIA T600 at 7035 (0.8% ahead), and the AMD FirePro M5100 at 6830 (2.1% behind). Placing the R5 M240 in this context shows it is roughly on par with high-end mobile GPUs from several generations, and just under the T600, a much newer workstation card. The Quadro K620's nearest rivals include the NVIDIA GeForce RTX 5070 Ti SUPER at 6270 (0.2% behind), the NVIDIA GeForce RTX 4070 Ti SUPER AD102 at 6270 (0.2% behind), the AMD Radeon R7 M350 at 6327 (0.7% ahead), and the AMD Radeon Pro WX 4100 at 6330 (0.8% ahead). Notably, the Quadro K620's average score of 6282 is dragged down by its Vulkan result of 5870, which is lower than its OpenCL score by over 12%. The R5 M240 has no Vulkan score recorded, so its average benchmark score equals its OpenCL score at 6975. If a user relies on Vulkan compute, the Quadro K620's 5870 score is the only data point available, and it falls substantially below the R5 M240's OpenCL performance. The head-to-head table shows winsA equal to 1 and winsB equal to 0, meaning the R5 M240 wins the only benchmark they share.

Specification Differences

The two GPUs differ across nearly every major specification. The AMD Radeon R5 M240 uses the Jet chip, while the NVIDIA Quadro K620 uses the GM107 chip. The architecture differs: GCN 1.0 for the R5 M240 versus Maxwell for the Quadro K620. Both are 28 nm parts from TSMC, but the R5 M240 has 690 million transistors versus 1,870 million for the Quadro K620, and the die sizes are 56 mm² versus 148 mm². Transistor density is close: 12.3M per mm² for the R5 M240 versus 12.6M per mm² for the Quadro K620. Clock speeds differ: the R5 M240 runs at 1000 MHz base and 1030 MHz boost, while the Quadro K620 runs at 1058 MHz base and 1124 MHz boost. Memory is a major split: the R5 M240 has 1024 MB of DDR3 on a 64-bit bus with 14.40 GB/s bandwidth, while the Quadro K620 has 2 GB of DDR3 on a 128-bit bus with 28.80 GB/s bandwidth. The R5 M240 has 320 shading units, 20 TMUs, and 8 ROPs, while the Quadro K620 has 384 shading units, 24 TMUs, and 16 ROPs. Pixel rate is 8.240 GPixel/s for the R5 M240 versus 17.98 GPixel/s for the Quadro K620, and texture rate is 20.60 GTexel/s versus 26.98 GTexel/s. FP32 performance is 659.2 GFLOPS for the R5 M240 versus 863.2 GFLOPS for the Quadro K620. The R5 M240 has no listed TDP, while the Quadro K620 is rated at 45 W. The R5 M240 uses PCIe 3.0 x8, while the Quadro K620 uses PCIe 2.0 x16. Display outputs are absent for the R5 M240, but the Quadro K620 has 1x DVI and 1x DisplayPort 1.2. The R5 M240 supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, while the Quadro K620 supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The Quadro K620 is a single-slot card with dimensions of 160 mm length and 69 mm height, no power connectors, and a suggested PSU of 200 W. The R5 M240 has no dimensions, power connectors, or PSU suggestions listed. Release dates differ: the R5 M240 launched on 2014-09-17, while the Quadro K620 launched on 2014-07-21. The R5 M240's predecessor is Solar System and its successor is Polaris Mobile, while the Quadro K620's predecessor is Quadro Fermi and its successor is Quadro Maxwell.