AMD Radeon R7 M465 vs NVIDIA Quadro K620 Comparison

Where Each One Wins

The benchmark database records a single head-to-head comparison between these two mobile and workstation oriented GPUs, and the result is unambiguous. The NVIDIA Quadro K620 takes the win in the only shared test, Geekbench OpenCL, with a score of 6693 against the AMD Radeon R7 M465's 5841. That represents a 14.6% advantage for the NVIDIA part. There are no recorded benchmark categories where the AMD Radeon R7 M465 comes out ahead of the Quadro K620 in direct comparison.

Looking beyond the direct head-to-head, the overall database picture reinforces this split. The Quadro K620 has an average benchmark score of 6282, placing it in the 36th percentile of all GPUs tracked. The Radeon R7 M465 averages 5841, which lands it in the 33rd percentile. The NVIDIA card also has a second recorded result, a Geekbench Vulkan score of 5870, which gives it a broader performance profile in the database. The AMD part only has the single OpenCL entry.

The use-case split is therefore straightforward: for general compute workloads measured by OpenCL, the Quadro K620 is the stronger option. Its nearest rivals in the database are tightly clustered, with the NVIDIA GeForce RTX 5070 Ti SUPER and NVIDIA GeForce RTX 4070 Ti SUPER AD102 both averaging 6270, a 0.2% delta from the Quadro K620. The AMD Radeon R7 M350 scores 6327, which is 0.7% higher, and the AMD Radeon Pro WX 4100 scores 6330, 0.8% higher. The Quadro K620 sits in a very competitive band of GPUs, trading blows within a single percentage point.

The Radeon R7 M465's nearest rivals tell a similar story of tight competition. The AMD Radeon R5 M435 averages 5859, 0.3% below the R7 M465. The Intel UHD Graphics 730 averages 5929, 1.5% higher. The NVIDIA GeForce GTX 550 Ti averages 5731, 1.9% lower, and the AMD Radeon HD 8730M averages 5955, 1.9% higher. The R7 M465 is thus positioned in a close group of older and integrated solutions, while the Quadro K620 competes in a slightly higher performance tier.

Architecture Differences

The two GPUs come from different architectural lineages. The NVIDIA Quadro K620 uses the GM107 chip built on the Maxwell architecture, while the AMD Radeon R7 M465 uses the Topaz chip based on GCN 3.0. Both are manufactured by TSMC on a 28 nm process, but the transistor budgets differ. The Quadro K620 packs 1,870 million transistors on a die size of 148 mm², resulting in a transistor density of 12.6 million per square millimeter. The Radeon R7 M465 has 1,550 million transistors on a 125 mm² die, giving a density of 12.4 million per square millimeter. The NVIDIA chip is therefore larger and denser, though the difference is modest.

The generation labels in the database are also distinct. The Quadro K620 is listed under the Quadro Kepler (Kx200) generation, despite using a Maxwell chip. The Radeon R7 M465 belongs to the Gem System (R7 M400) generation. Both are end-of-life products, with the Quadro K620 released on 2014-07-21 and the Radeon R7 M465 released later on 2016-05-14.

Feature support differs as well. The Quadro K620 supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The Radeon R7 M465 supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170. The AMD part has a higher DirectX feature level, while the NVIDIA part exposes a newer Vulkan version. The Quadro K620 also has a display output configuration of 1x DVI and 1x DisplayPort 1.2, whereas the Radeon R7 M465 has no display outputs recorded in the database. The Quadro K620 is a single-slot card with no power connectors and a suggested PSU of 200 W, while the Radeon R7 M465 has no slot width, power connector, or PSU guidance listed.

Head-to-Head Benchmarks

The only direct benchmark comparison in the database is Geekbench OpenCL. The NVIDIA Quadro K620 scores 6693, while the AMD Radeon R7 M465 scores 5841. The delta is 14.6% in favor of the NVIDIA card. This is a meaningful gap for two GPUs with the same shading unit count and TMU count, but it reflects more than just raw core counts.

The Quadro K620's advantage likely stems from its higher clock speeds. The NVIDIA card runs at a base clock of 1058 MHz with a boost of 1124 MHz. The Radeon R7 M465 runs at a base of 730 MHz and boosts to 1024 MHz. The NVIDIA part also has a higher pixel rate at 17.98 GPixel/s versus 8.192 GPixel/s, and a higher texture rate at 26.98 GTexel/s versus 24.58 GTexel/s. The FP32 throughput of the Quadro K620 is 863.2 GFLOPS, compared to 786.4 GFLOPS for the Radeon.

Memory configuration further separates the two. The Quadro K620 uses 2 GB of DDR3 on a 128-bit bus with a bandwidth of 28.80 GB/s. The Radeon R7 M465 uses 2 GB of GDDR5 on a 64-bit bus with a bandwidth of 36.00 GB/s. The AMD card has higher raw bandwidth despite the narrower bus, but in the OpenCL test it still trails. The Radeon also has half the ROP count of the NVIDIA card, 8 versus 16, which explains the large pixel rate disparity.

The Quadro K620 also has a second benchmark result in the database, a Geekbench Vulkan score of 5870. This is lower than its OpenCL score of 6693, but it shows the GPU has functional Vulkan performance under the 1.4 API. The Radeon R7 M465 has no Vulkan result recorded, so no comparison is possible in that API.

Specification Differences

The two GPUs differ across nearly every major specification category in the database. The process node is the same at 28 nm, and both are made by TSMC, but the chip details diverge. The Quadro K620 uses the GM107 chip with 1,870 million transistors on a 148 mm² die. The Radeon R7 M465 uses the Topaz chip with 1,550 million transistors on a 125 mm² die. Transistor density is close, 12.6M per mm² versus 12.4M per mm².

Clock speeds favor NVIDIA heavily. The Quadro K620 has a base clock of 1058 MHz and a boost clock of 1124 MHz. The Radeon R7 M465 has a base clock of 730 MHz and a boost clock of 1024 MHz. Memory clocks also differ, with the Quadro K620 at 900 MHz (1800 Mbps effective) and the Radeon R7 M465 at 1125 MHz (4.5 Gbps effective).

Memory type and bus width are different. The Quadro K620 uses 2 GB of DDR3 on a 128-bit bus with 28.80 GB/s bandwidth. The Radeon R7 M465 uses 2 GB of GDDR5 on a 64-bit bus with 36.00 GB/s bandwidth. Both have 384 shading units and 24 TMUs, but the ROP count differs: 16 for NVIDIA, 8 for AMD.

Compute rates reflect the clock and ROP differences. The Quadro K620 achieves 17.98 GPixel/s pixel rate, 26.98 GTexel/s texture rate, and 863.2 GFLOPS FP32. The Radeon R7 M465 achieves 8.192 GPixel/s, 24.58 GTexel/s, and 786.4 GFLOPS FP32. The AMD card also lists FP16 at 786.4 GFLOPS with a 1:1 ratio, while the NVIDIA card has no FP16 figure recorded.

The Quadro K620 has a TDP of 45 W, is single-slot, has no power connectors, and a suggested PSU of 200 W. It uses PCIe 2.0 x16 and measures 160 mm in length and 69 mm in height. The Radeon R7 M465 has no TDP, slot width, power connector, PSU suggestion, or dimensions recorded. It uses PCIe 3.0 x8. The Quadro K620 has display outputs of 1x DVI and 1x DisplayPort 1.2; the Radeon has none listed.

API support differs in DirectX and Vulkan. The Quadro K620 supports DirectX 12 (11_0) and Vulkan 1.4. The Radeon R7 M465 supports DirectX 12 (12_0) and Vulkan 1.2.170. Both support OpenGL 4.6.

FAQ

Q: Which GPU wins in the recorded head-to-head benchmark?

A: The NVIDIA Quadro K620 wins the Geekbench OpenCL test with a score of 6693 against the AMD Radeon R7 M465's 5841, a 14.6% delta.

Q: How do the average benchmark scores compare?

A: The Quadro K620 has an average benchmark score of 6282, placing it in the 36th percentile of all GPUs. The Radeon R7 M465 averages 5841, placing it in the 33rd percentile.

Q: Do both GPUs have the same number of shading units?

A: Yes, both have 384 shading units and 24 TMUs. The ROP count differs, with the Quadro K620 at 16 and the Radeon R7 M465 at 8.

Q: What are the memory configurations?

A: The Quadro K620 uses 2 GB of DDR3 on a 128-bit bus with 28.80 GB/s bandwidth. The Radeon R7 M465 uses 2 GB of GDDR5 on a 64-bit bus with 36.00 GB/s bandwidth.

Q: Which GPU has higher clock speeds?

A: The Quadro K620 runs at 1058 MHz base and 1124 MHz boost. The Radeon R7 M465 runs at 730 MHz base and 1024 MHz boost.

Q: How do API support levels compare?

A: The Quadro K620 supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The Radeon R7 M465 supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170.