Intel Iris Pro Graphics P6300 vs NVIDIA GeForce GTX 765M Comparison

The benchmark data clearly favors the NVIDIA GeForce GTX 765M in the only direct head-to-head comparison available. Intel’s Iris Pro Graphics P6300 is a capable integrated solution, but it cannot match the discrete GeForce part’s raw compute output. This is a matchup between a 15 W IGP and a 75 W MXM module, and the performance gap reflects that fundamental difference.

Head-to-Head Benchmarks

The sole direct comparison in the data is the Geekbench OpenCL test. Here, the NVIDIA GeForce GTX 765M scores 7,176, while the Intel Iris Pro Graphics P6300 scores 5,712. This translates to a 20.4% deficit for the Intel part, a substantial margin in a compute-focused workload. This result is the decisive data point for this comparison.

Looking at the wider benchmark context, the GeForce GTX 765M also has results for Metal and Vulkan, scoring 2,612 and 6,714 respectively. The Intel part has no comparable scores in those APIs, meaning the NVIDIA GPU offers broader API support in the data. The OpenCL score alone, however, shows the NVIDIA part is significantly faster at general-purpose compute tasks.

The GeForce GTX 765M’s average benchmark score of 5,501 is slightly lower than its OpenCL score, which suggests that its Metal and Vulkan results pull the average down. Even so, its OpenCL score is the highest single benchmark result in this comparison. The Intel Iris Pro’s average score of 5,712 is identical to its OpenCL score, as that is its only recorded benchmark.

For context, the Intel part’s nearest rival in the database is the NVIDIA GeForce GTX 670MX, which scores 5,721 and is just 0.1% faster. The NVIDIA GeForce GTX 765M’s nearest rival is the NVIDIA GeForce MX130 at 5,508, which is 0.1% slower. This shows that both parts sit in a dense performance cluster around the 5,500-5,700 mark, yet the GeForce GTX 765M’s OpenCL result pushes it well above that cluster.

The data shows a clear winner in raw compute: the GeForce GTX 765M is 20.4% ahead in the only shared test. No amount of analysis can change that the Intel IGP loses its only direct benchmark by a wide margin.

FAQ

Q: Which GPU is faster in the Geekbench OpenCL benchmark?

A: The NVIDIA GeForce GTX 765M is faster, scoring 7,176 versus 5,712 for the Intel Iris Pro Graphics P6300, a 20.4% advantage.

Q: Does the Intel Iris Pro have any benchmark wins over the GeForce GTX 765M?

A: No. In the head-to-head data, the Intel part wins zero tests, while the NVIDIA part wins one test (Geekbench OpenCL).

Q: How does the Intel Iris Pro Graphics P6300 compare to its nearest rivals?

A: It is essentially tied with the NVIDIA GeForce GTX 670MX (0.1% slower) and the NVIDIA GeForce GTX 550 Ti (0.3% slower), while being 0.4% faster than the AMD Radeon HD 8790M and 1.9% faster than the NVIDIA Quadro M500M.

Q: What is the performance context for the NVIDIA GeForce GTX 765M?

A: Its average score of 5,501 places it near the NVIDIA GeForce MX130 (0.1% slower) and AMD Radeon R7 M440 (0.3% faster), but its peak OpenCL score of 7,176 is significantly higher than its average.

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

A: The Intel Iris Pro Graphics P6300 has a 33rd percentile ranking, slightly higher than the GeForce GTX 765M’s 32nd percentile.

Q: Does the GeForce GTX 765M support more modern graphics APIs?

A: Yes. The GeForce GTX 765M supports OpenGL 4.6 and Vulkan 1.2.175, while the Intel part supports OpenGL 4.4 and Vulkan 1.0. Both support DirectX 12, but the Intel part supports version 12 (11_1) while the NVIDIA part supports 12 (11_0).

The Verdict

The data dictates a straightforward verdict: the NVIDIA GeForce GTX 765M is the superior performer in compute workloads. Its 20.4% lead in Geekbench OpenCL is decisive and leaves no room for ambiguity. The Intel Iris Pro Graphics P6300 is the better choice only if you prioritize its integrated form factor and far lower power draw, but not for performance.

For users who need the highest possible OpenCL compute performance, the GeForce GTX 765M is the clear pick. Its score of 7,176 is not just a win; it is a substantial victory that places it well ahead of the Intel part’s 5,712. The GeForce also offers broader API support, with Vulkan 1.2.175 and OpenGL 4.6, which may be relevant for certain applications.

The Intel part is not without merit, but its strengths lie elsewhere. Its 33rd percentile ranking is marginally better than the GeForce’s 32nd, and its 15 W TDP is a fraction of the 75 W TDP of the NVIDIA part. For a system where power efficiency and integrated simplicity are paramount, the Intel IGP is the sensible choice. However, the data shows that this comes at a significant cost to raw compute performance.

Specification Differences

The two GPUs differ across nearly every core specification. The NVIDIA GeForce GTX 765M has 768 shading units, 64 TMUs, and 16 ROPs, while the Intel Iris Pro Graphics P6300 has 384 shading units, 48 TMUs, and only 6 ROPs. This means the NVIDIA part has double the shading units and nearly triple the ROPs.

Clock speeds also differ sharply. The GeForce GTX 765M runs at a base clock of 797 MHz and boosts to 863 MHz, while the Intel part is clocked at 300 MHz base and 800 MHz boost. The NVIDIA GPU’s memory is a dedicated 2 GB of GDDR5 on a 128-bit bus, providing 64.13 GB/s of bandwidth. The Intel part uses system-shared memory, with bandwidth listed as “System Dependent.”

These specifications lead to a large gap in theoretical throughput. The GeForce GTX 765M achieves a pixel rate of 13.81 GPixel/s and a texture rate of 55.23 GTexel/s, compared to the Intel part’s 4.800 GPixel/s and 38.40 GTexel/s. The FP32 compute rating is 1,325.6 GFLOPS for the NVIDIA part versus 614.4 GFLOPS for the Intel part, a difference of over 2x.

Power consumption is a major differentiator, with the Intel IGP rated at 15 W and the NVIDIA MXM module at 75 W. The bus interface also differs: the Intel part uses a Ring Bus, while the GeForce GTX 765M uses MXM-B (3.0). The NVIDIA part has no power connectors listed, while the Intel part has none as it is an IGP.

Architecture Differences

The architectural divide is fundamental. The Intel Iris Pro Graphics P6300 is based on the Broadwell GT3e chip, using Intel’s Generation 8.0 architecture on a 14 nm process node manufactured by Intel. The NVIDIA GeForce GTX 765M is built on the GK106 chip, using NVIDIA’s Kepler architecture on a 28 nm process node from TSMC.

The NVIDIA chip is larger and more complex, with 2,540 million transistors on a 221 mm² die. This yields a transistor density of 11.5M / mm². The Intel chip’s transistor count and die size are not listed in the data, but its 14 nm process is a newer node than the 28 nm used by NVIDIA.

The Intel part is part of the HD Graphics-W (Broadwell) generation, while the NVIDIA part belongs to the GeForce 700M series. The NVIDIA GPU has a clear predecessor and successor in the GeForce 600M and GeForce 800M, respectively. The Intel part has no listed predecessor or successor.

The API support reflects the architectural differences. The NVIDIA Kepler part supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The Intel Generation 8.0 part supports DirectX 12 (11_1), OpenGL 4.4, and Vulkan 1.0. The NVIDIA part’s newer API versions, particularly for Vulkan and OpenGL, are a notable software advantage.

The memory architecture is also contrasting. The Intel IGP relies on system-shared memory, which is slower and dependent on the rest of the system. The NVIDIA part has its own dedicated GDDR5 memory with a fixed 64.13 GB/s bandwidth, offering predictable and higher performance.

Where Each One Wins

The NVIDIA GeForce GTX 765M wins decisively in any compute-heavy application where OpenCL performance matters. Its 20.4% lead in Geekbench OpenCL is the single largest margin in this comparison. The data also shows it wins in API support, with Vulkan 1.2.175 and OpenGL 4.6, making it more versatile for modern applications. Its higher pixel rate (13.81 GPixel/s) and texture rate (55.23 GTexel/s) suggest it is also better suited for graphics rendering tasks.

The Intel Iris Pro Graphics P6300 wins in scenarios where power consumption is critical. Its 15 W TDP is one-fifth of the NVIDIA part’s 75 W TDP, making it ideal for ultra-portable or power-constrained designs. It also holds a marginal edge in its percentile ranking (33rd vs 32nd) and its average benchmark score (5,712 vs 5,501), though this is due to the NVIDIA part’s lower Metal and Vulkan scores. The Intel part’s integrated nature means no separate memory is needed, which can simplify system design.

In practical terms, the GeForce GTX 765M is for users who need discrete-level performance in a laptop. The Intel Iris Pro is for users who need basic graphics capability with minimal power draw. The data does not support the Intel part as a performance alternative; it is a power-efficiency alternative.